Free Printable Unit 7 Review

1.

What is the highest score in the class?

a)

88%

b)

100%

c)

13

d)

98%

2.

How many students received a score of 94%?

a)

94

b)

4

c)

1

d)

2

3.

How many students received a score in the 80's?

a)

2

b)

10

c)

14

d)

27

4.

How many total students are in the science class?

a)

13

b)

6

c)

27

d)

25

5.

What is the range of the test scores?

a)

15

b)

100

c)

6

d)

10

6.

What is the MODE of this data?

a)

90

b)

85, 90, and 95

c)

85 and 95

d)

None

7.

The mode is

a)

The middle score

b)

Scores added & divided by the number of scores

c)

The most frequent score

d)

The middle when in order

8.

The median is

a)

The middle score

b)

Scores added & divided by the number of scores

c)

The most frequent score

d)

The middle when in order

9.

Identify the outlier for the given data?
23, 34, 27, 7, 30, 26, 28, 31, 34

a)

7

b)

23

c)

31

d)

34

10.

Find the mode of these numbers:

4,3,6,4,3,6,6,3,2,1,3

a)

3

b)

6

c)

4

d)

2

11.

What is the mode of the trout weight?

a)

450

b)

450.5

c)

452

d)

460

12.

What is the range of the data set?

a)

.8

b)

8

c)

80

d)

.08

13.

What was the day with the least amount of cars sold?

a)

Monday

b)

Tuesday

c)

Wednesday

d)

Thursday

14.

What is the definition of the mean?

a)

The average

b)

The middle number

c)

The difference between the highest and lowest numbers

d)

The number that occurs the most

15.

At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the mode.
12,10,10,10,13,12,11,13,10

a)

13

b)

12

c)

11

d)

10

16.

The mode is the number ________________________.

a)

you see most

b)

you see least

c)

you don't see

d)

you see first

17.

What is the RANGE of these numbers? 3, 7, 9, 10

(a)

18.

Find the average (mean) of these numbers.

10, 3, 2, 5

a)

5

b)

4

c)

10

d)

3

19.

The range is found by finding the _______________ number and subtracting the ________________ number.

a)

smallest, biggest

b)

even, odd

c)

biggest, smallest

d)

middle, first

20.

What type of graph is this?

a)

Bar Graph

b)

Histogram

c)

Line Plot

21.

How many students were greater than 55 inches tall but less than 70 inches tall?

a)

13

b)

15

c)

16

d)

17

22.

How many students ride their bicycle to school?

a)

40

b)

35

c)

30

d)

20

23.

How many more mountain bikes were sold than road bikes?

a)

22

b)

28

c)

16

d)

6

24.

Which pizzeria has the second largest sales?

a)

Pizza House

b)

Domiano's Pizza

c)

Little Secrets Pizza

d)

Uncle John's Pizza

25.

What type of graph is this?

a)

bar graph

b)

pictograph

c)

tally chart

26.

Which pet got the most votes?

a)

cats

b)

dogs

c)

fish

27.

How many people like fish best?

a)

10

b)

4

c)

6

d)

5

28.

How many fewer children chose science than math?

a)

2 children

b)

4 children

c)

5 children

29.

How many more did Ima Stuft eat than R.U. Fuller?

a)

1

b)

4

c)

20

d)

3

30.

All together, how many hot dogs were eaten?

a)

26

b)

40

c)

38

d)

37

31.

How many students ride their bicycle to school?

a)

40

b)

35

c)

30

d)

20

32.

How many more mountain bikes were sold than road bikes?

a)

22

b)

28

c)

16

d)

6

33.

Which pizzeria has the second largest sales?

a)

Pizza House

b)

Domiano's Pizza

c)

Little Secrets Pizza

d)

Uncle John's Pizza

34.

Which pet got the most votes?

a)

cats

b)

dogs

c)

fish

35.

How many people like fish best?

a)

10

b)

4

c)

6

d)

5

36.

How many fewer children chose science than math?

a)

2 children

b)

4 children

c)

5 children

37.

How many shoes in all?

a)

8

b)

12

c)

10

d)

3

38.

Which color is the least favorite?

a)

purple

b)

red

c)

green

d)

blue

39.

How many children like green?

a)

100

b)

10

c)

2

d)

5

40.

How many votes did reading receive?

a)

2

b)

4

c)

6

d)

8

41.

How many students like the strawberry ice cream the best?

(a)

42.

How many children are in the class?

(a)

43.

a)

5 jumps

b)

90 jumps

c)

100 jumps

d)

50 jumps

44.

Moby collected seashells. How many pink AND black shells did he collect?

a)

2 seashells

b)

4 seashells

c)

5 seashells

d)

6 seashells

45.

The tally chart shows how many times people jump roped. Who jump roped 8 times?

a)

Moby

b)

Becca

c)

Tasha

d)

Amber

46.

Where can you find what symbols mean on a pictograph?

a)

in the key

b)

in the title

c)

in the survey

d)

in the question

47.

In a pictograph, 1 star is equal to 2 votes. How many stars stand for 6 votes?

a)

b)

c)

d)

48.

How many total votes were collected?

a)

5

b)

10

c)

15

d)

20

49.

The graph shows the number of colored beads used to make a necklace. How many purple and green beads were used in all?

a)

23

b)

20

c)

18

d)

15

50.

What did I forget to put on this bar graph?

a)

The scale

b)

The titles

c)

The pictures

d)

The key

51.

Find the mean of the numbers below:

4, 9, 7, 10, 5

a)

5

b)

6

c)

7

d)

8

52.

Find the mean of the numbers below:

2, 8, 6, 3, 12, 7, 4

a)

5

b)

6

c)

7

d)

8

53.

Find the mean of the numbers below:

3, 2, 1, 3, 2, 1, 3, 2, 1, 3, 2, 1

a)

3

b)

2

c)

1

d)

4

54.

Find the mean of the numbers below:

1, 8, 7, 5, 6, 4, 7, 6

a)

5

b)

5.5

c)

6

d)

6.5

55.

Find the mean of the numbers below:

20, 30, 24, 32

a)

26.5

b)

27.5

c)

27

d)

27.5

56.

Find the mean of the numbers below:

12, 8, 14, 5, 1, 3, 0, 8, 10, 11

a)

7.2

b)

8

c)

9

d)

7.4

57.

Find the mean of the numbers below:

1.4, 2.8, 2.4, 2.5, 2.8, 3.1, 1.1

a)

2.3

b)

2.2

c)

2.4

d)

2.1

58.

The mean of four numbers is 10.

Three of the numbers are 9, 11 and 7.

Work out the fourth number.

a)

9

b)

13

c)

11

d)

15

59.

Is this a statistical question: How many emails do you send each each day?

a)

Yes

b)

No

60.

Is this a statistical question: How many players are on the Springfield football team?

a)

Yes

b)

No

61.

Is this a statistical question: How many people in Coach Knight's classes are in the band?

a)

Yes

b)

No

62.

Is this a statistical question: Do you like cinematic music?

a)

Yes

b)

No

63.

The temperature in Springfield on this date in the last ten years were: 68, 68, 69, 70, 72, 70, 68, 75, 55, 67. What is the average temperature on this date over the last ten years? (Round to nearest whole number)

a)

60

b)

61

c)

68

d)

69

64.

Jessica has five grades from assessments and quizzes. They are all weighted equally. If her grades are 50, 70, 88, 70, and 88, what is her current average grade?

a)

71

b)

72

c)

73

d)

74

65.

Find the mean of these numbers:
2, 57, 38, 42, 6

a)

29

b)

38

c)

50

d)

145

66.

Calculate the mean:

23, 15, 8, 12, 26, 5, 22, 9

a)

17.1

b)

15

c)

13.3

d)

12

67.

Calculate the mean:

81, 69, 72, 80, 67, 62, 78, 74, 71, 86

a)

82.2

b)

92

c)

67.2

d)

74

68.

Calculate the mean:

25, 36, 34, 17, 22, 31, 38

a)

25.3

b)

29

c)

40

d)

33.8

69.

Calculate the mean:

61, 45, 52, 48, 53, 49, 57, 46, 60, 54, 58

a)

49

b)

53

c)

64.7

d)

58.3

70.

Find the mean of the data set:

14, 19, 13, 22, 7

a)

15

b)

13

c)

There is none because no numbers repeat.

d)

15

71.

Find the median of the data set:

17, 35, 20, 18, 29, 26

a)

23

b)

24.17

c)

There is none because no numbers repeat.

d)

18

72.

Find the mode of the data set:

10, 18, 13, 22, 10, 13, 10, 19

a)

14.375

b)

13

c)

10

d)

12

73.

Find the range of the data set:

37, 40, 33, 45, 32, 34

a)

36.83

b)

35.5

c)

There is none because no numbers repeat.

d)

13

74.

What is the outlier in the following data set?

29, 2, 28, 30, 26, 31

a)

2

b)

29

c)

31

d)

23.3

75.

Pam is 17 years old and her sister is 9. Her two brothers are 11 and 7 years old. What is the mean of their ages?

a)

11

b)

10

c)

13

d)

9

76.

Sam had four tests last month. His scores were 81, 94, 83 and 91. What is the median of his scores?

a)

87

b)

87.25

c)

83

d)

91

77.

When Sally went bowling, her scores were 108, 72 and 95. If she bowls a 4th game, what will her score need to be to give her an average of 91?

a)

89

b)

77

c)

91

78.

The mean of the data set is 15. What number is missing?

18, 16, _, 9, 12, 23

a)

12

b)

14

c)

15

79.

The range of a data set is 18. If the smallest number of the set is 9, what is the largest number.

a)

27

b)

18

c)

13.5

80.

Find the median of the data set:

8, 19, 14, 16, 9, 20, 9

a)

14

b)

12

c)

13.57

d)

9

81.

The median of the data set is 18. What number is missing?

12, 17, _, 21, 13, 25

a)

19

b)

20

c)

13

d)

18

82.

Mindy had five tests last month. Her scores were 95, 86, 78, 80 and 91. What is the range of her scores?

a)

13

b)

86

c)

There is none because no numbers repeat.

83.

The mode of a data set is 21. What number is missing?

21, 17, _, 25, 23, 13

a)

21

b)

Not enough information to tell

c)

27

d)

12

84.

The range of a data set is 32. If the largest number in the set is 50, what is the smallest number?

a)

18

b)

82

c)

Not enough information to tell

85.

Find the mean of the data set:

15, 22, 19, 20, 29, 18, 25, 19, 31

a)

20

b)

19

c)

16

d)

22

86.

Find the mode of the data set:

29, 22, 19, 20, 29, 23, 29, 19, 31

a)

23

b)

29

c)

12

d)

24.56

87.

What is the outlier in the following set?

28, 31, 40, 26, 38, 65, 39, 35, 30

a)

65

b)

26

c)

39

88.

The mean of the data set is 18. What number is missing?

21, 11, _, 27, 22, 13, 16

a)

18

b)

Not enough information to tell

c)

16

89.

The median of the data set is 81. What number is missing?

82, 87, _, 77, 70, 80, 88

a)

81

b)

83

c)

15

d)

Not enough information to tell

90.

What is the standard deviation for the data given:

5, 10, 7, 12, 0, 20, 15, 22, 8, 2

a)

6.89

b)

10.1

c)

7.26

d)

9

91.

All of the below sets have the same mean.
Set 1-Standard Deviation=3.1
Set 2-Standard Deviation=4.9
Set 3-Standard Deviation=1.7
Set 4-Standard Deviation=3.2
Which set of data probably has the points closest to the mean?

a)

1

b)

2

c)

3

d)

4

92.

What is the standard deviation for the data given:

5, 10, 7, 12, 0, 20, 15, 22, 8, 2

a)

6.89

b)

10.1

c)

7.26

d)

9

93.

This data is normally distributed. What percent of the data is in the shaded region?

a)

68%

b)

95%

c)

99.7%

d)

50%

94.

Four data sets are shown below.
Set 1: {10, 19, 38, 50, 51}
Set 2: {5, 21, 26, 39, 51}
Set 3: {9, 38, 50, 50, 51}
Set 4: {5, 28, 28, 28, 51}
Which data set has the largest standard deviation?

a)

Set 1

b)

Set 2

c)

Set 3

d)

Set 4

95.

What is the standard deviation for the data given:
5, 10, 7, 12, 0, 20, 15, 22, 8, 2

a)

6.89

b)

10.1

c)

7.26

d)

9

96.

What does this symbol represent?

a)

Standard Deviation

b)

Variance

c)

Mean Absolute Deviation

d)

Sigma

97.

Find the median of these numbers:
4, 2, 7, 4, 3

a)

2

b)

5

c)

7

d)

4

98.

What is the standard deviation for the data given:
{12, 13, 29, 18, 61, 35, 21}

a)

293.67

b)

15.87

c)

17.14

d)

41.98

99.

Find the mean of these numbers:
5,11,2,12,4,2

a)

4.1

b)

6

c)

4.5

d)

4

100.

What is the mean?

a)

# happening the most

b)

the number in the middle

c)

biggest-smallest

d)

the average

101.

What is the median?

a)

biggest- smallest

b)

average

c)

the middle #

d)

# that happens the most

102.

What is the standard deviation for the data given:

5, 10, 7, 12, 0, 20, 15, 22, 8, 2

a)

6.89

b)

10.1

c)

7.26

d)

9

103.

To find the _________ you add up all the numbers and then divide by how many numbers you have.

a)

Mean

b)

Median

c)

Mode

d)

Range

104.

What is the standard deviation for the data given:

5, 10, 7, 12, 0, 20, 15, 22, 8, 2

a)

6.89

b)

10.1

c)

7.26

d)

9

105.

What does this symbol represent?

a)

Standard Deviation

b)

Variance

c)

Mean Absolute Deviation

d)

Sigma

106.

Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Roger's scores?

a)

193

b)

127

c)

60

d)

66

107.

What is the standard deviation for the data given:
{12, 13, 29, 18, 61, 35, 21}

a)

293.67

b)

15.87

c)

17.14

d)

41.98

108.

Find the mean of these numbers:
5,11,2,12,4,2

a)

4.1

b)

6

c)

4.5

d)

4

109.

All of the below sets have the same mean.
Set 1-Standard Deviation=3.1
Set 2-Standard Deviation=4.9
Set 3-Standard Deviation=1.7
Set 4-Standard Deviation=3.2
Which set of data probably has the points closest to the mean?

a)

1

b)

2

c)

3

d)

4

110.

This data is normally distributed. What percent of the data is in the shaded region?

a)

68%

b)

95%

c)

99.7%

d)

50%

111.

Four data sets are shown below.
Set 1: {10, 19, 38, 50, 51}
Set 2: {5, 21, 26, 39, 51}
Set 3: {9, 38, 50, 50, 51}
Set 4: {5, 28, 28, 28, 51}
Which data set has the largest standard deviation?

a)

Set 1

b)

Set 2

c)

Set 3

d)

Set 4

112.

All of the below sets have the same mean.

Set 1 - Standard Deviation = 3.1

Set 2 - Standard Deviation = 4.9

Set 3 - Standard Deviation = 1.7

Set 4 - Standard Deviation = 3.2

Which set of data probably has the points closest to the mean?

a)

Set 1

b)

Set 2

c)

Set 3

d)

Set 4

113.

Which dotplot has the smallest standard deviation?

a)

Dotplot A

b)

Dotplot B

c)

Dotplot C

d)

Dotplot D

114.

Which of the following is a measure of variability?

a)

mean

b)

median

c)

mode

d)

standard deviation

115.

The _______________________ is the number that occurs most often in a data set.

a)

Mean

b)

Median

c)

Mode

d)

IQR

116.

When there is an outlier, the _____________________________ is the better measure of center.

a)

Mean

b)

Median

c)

Mode

d)

MAD

117.

The _______________________ is what you get when you subtract the lowest value from the highest.

a)

Range

b)

IQR

c)

Q3

d)

Q1

118.

When the distribution of data makes a bell-shaped curve, this is called a _____________________________ distribution.

a)

Symmetric

b)

Bimodal

c)

Skewed Right

d)

Skewed Left

119.

An ______________________ is a single piece of data that falls well outside the range of the other values.

a)

Outlier

b)

Outlander

c)

Timbaland

d)

Range

120.

Describe the shape of the histogram’s distribution.

a)

Skewed Left

b)

Skewed Right

c)

Symmetric

d)

BiModal

121.

Approximately, what percentage of Class 1 had a grade over 90?

a)

50%

b)

25%

c)

100%

d)

75%

122.

Approximately, what percentage of class 2 had a grade over 70?

a)

75%

b)

25%

c)

50%

d)

100%

123.

Which group might have an outlier? _________

a)

Class 1

b)

Class 2

c)

Both

d)

None

124.

Describe the shape of the distribution.

a)

Symmetric

b)

BiModal

c)

Unimodal

d)

Skewed Left

125.

a)

A

b)

B

c)

C

d)

D

126.

a)

A

b)

B

c)

C

d)

D

127.

a)

A

b)

B

c)

C

d)

D

128.

a)

A

b)

B

c)

C

d)

D

129.

a)

A

b)

B

c)

C

d)

D

130.

a)

A

b)

B

c)

C

d)

D

131.

a)

A

b)

B

c)

C

d)

D

132.

a)

A

b)

B

c)

C

d)

D

133.

a)

A

b)

B

c)

C

d)

D

134.

a)

A

b)

B

c)

C

d)

D

135.

a)

A

b)

B

c)

C

d)

D

136.

a)

A

b)

B

c)

C

d)

D

137.

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many chapters would be in a book with 180 pages.

a)

12 chapters

b)

15 chapters

c)

18 chapters

d)

21 chapters

138.

If Joe worked 30 hours, how much is he expected to earn?

a)

$600

b)

$200

c)

$1000

d)

$800

139.

Which scatter plot shows no relationship?

a)

Graph A

b)

Graph B

c)

Graph C

d)

Graph D

140.

If Gold's Gym is looking to buy 30 TVs, how much will each one cost?

a)

400

b)

750

c)

1250

d)

0

141.

What would be the correlation between study time and test grades?

a)

positive

b)

negative

c)

none

d)

cannot be determined

142.

The scatter plot below shows the number of books read by students in Mrs. Hall’s English class and their final grades. Which statement represents the best description about the line of best fit?

a)

The more books students read, the lower their English grade.

b)

The more books students read, the higher their English grade.

c)

The fewer books students read, the higher their English grade.

d)

No relationship exists between the number of books students read and their English grades.

143.

What type of correlation best describes the scatter plot shown?

a)

positive, weak

b)

positive, strong

c)

negative, weak

d)

no correlation

144.

Data is collected comparing sales of cars and the age of the salesperson. After analyzing the data, it is determined that the correlation coefficient is 0.19. What does this mean?

a)

There is no correlation between sales and age.

b)

There is a strong positive correlation between sales and age.

c)

There is a strong negative correlation between sales and age.

d)

There is a weak negative correlation between sales and age.

145.

Estimate the correlation coefficient for this scatterplot.

a)

r = 1.2

b)

r = 0.89

c)

r = 0

d)

r = -0.89

146.

Which with is the line of best fit?

a)

A) Black

b)

B) Orange

c)

C) Red

d)

D) Blue

147.

Rich is a member of a gym. He pays a monthly fee plus a per-visit fee. The equation below represents the monthly amount Rich pays for his membership to the gym per month for x visits.

y= 10 + 3x

What does the y-intercept of the graph of this equation represent?

a)

The monthly fee

b)

How much Rich pays per visit

c)

The number of times Rich goes to the gym

d)

The total cost at the end of the month

148.

Make a prediction for a resting heart rate after 6 hours of exercise a week.

a)

6

b)

50

c)

55

d)

59

149.

Describe the correlation in the graph shown.

a)

Strong Negative

b)

Strong Positive

c)

Weak Negative

d)

Weak Positive

150.

The correlation coefficient measures...

a)

whether there is a relationship between two variables.

b)

the strength of the relationship between two quantitative variables.

c)

whether a cause and effect relation exists between two variables.

d)

the strength of the linear relationship between two quantitative variables.

151.

What letter do we use to represent correlation coefficient?

a)

c

b)

r

c)

p

d)

h

152.

What would be the correlation be between the "number of times a student skips class" and their "exam score"?

a)

positive correlation

b)

negative correlation

c)

no correlation

d)

cannot be determined

153.

Car weight and distance traveled using a full tank of gas. $r=-.86$

a)

strong positive

b)

strong negative

c)

weak positive

d)

weak negative

154.

1.Use linear regression to formulate an equation that can be used to model the relationship between the runner's distance and the time in minutes based on the information provided on the table.

a)

$y=7.699x-0.211$

b)

$y=0.129x+0.046$

c)

$y=0.997x$

d)

$y=0.080x+0.400$

155.

2.Use the equation or the graph that you created. What is the best prediction of the runner's distance if he runs for a total of 60 minutes?

(a) miles

Choose from the below words

7.8

2.6

5.2

10.3

156.

3.What is the correlation coefficient (rounded to the nearest thousandth)?

(a)

Does this situation represent association only, causation or neither? (b)

Choose from the below words

.129

.046

.997

-.994

causation

association only

neither

157.

4.What does the correlation coefficient reveal about the strength of the linear association between the runner's distance and the duration of his run?

(a) correlation

Choose from the below words

weak positive

moderate positive

strong negative

no

strong positive

weak negative

moderate negative

158.

5.What does each correlation coefficient say about the relationship between x and y?

a)

Strong positive

1.

r = 0.78

b)

Weak positive

2.

r = 0.23

c)

Strong negative

3.

r = -0.89

d)

Weak negative

4.

r = -0.14

e)

Moderate positive

5.

r = 0.50

159.

6.

A perfect negative correlation has a correlation coefficient of (a) .

A perfect positive correlation has a correlation coefficient of (b) .

A scatterplot with No correlation has a correlation coefficient of (c) .

Choose from the below words

1

0

.33

-.67

.67

-.33

-1

160.

7.Estimate the correlation coefficient

(a)

Interpret the strength of the relationship. (b)

Choose from the below words

r = 1

r = -1

r ≈ -0.8

r ≈ 0.8

r ≈ -0.5

strong negative

strong positive

moderate negative

weak negative

no correlation

161.

8.Data is analyzed comparing hours studied and grades. It is determined that the correlation coefficient is 0.92. What does this mean?

a)

There is a strong positive correlation between studying and grades.

b)

There is a strong negative correlation between studying and grades.

c)

There is a weak positive correlation between studying and grades.

d)

There is a weak negative correlation between studying and grades.

162.

9.Based on the scatter plot, which statement best describes the trend?

a)

As the daily temperature increases, the number of beach visitors increases.

b)

As the daily temperature decreases, the number of beach visitors increases.

c)

As the daily temperature increases, there is no change in the number of beach visitors

d)

As the daily temperature increases, the number of beach visitors decreases

163.

10.What is the correlation coefficient, and what does it say about the line?

a)

-.99 weak negative relationship

b)

-.99 strong negative relationship

c)

.99 strong positive relationship

d)

.99 weak positive relationship

164.

11. Look at the two scatterplots. After using linear regression, a line of best fit has been calculated. Which plot do you believe has the higher correlation coefficient? (a)

Explain your reasoning. (b)

Choose from the below words

Plot A

The points are closer together.

Plot B

The points are farther apart.

The points are going up.

The points are all on the line.

165.

1.Use linear regression to formulate an equation that can be used to model the relationship between the runner's distance and the time in minutes based on the information provided on the table.

a)

$y=7.699x-0.211$

b)

$y=0.129x+0.046$

c)

$y=0.997x$

d)

$y=0.080x+0.400$

166.

2.Use the equation or the graph that you created. What is the best prediction of the runner's distance if he runs for a total of 60 minutes?

(a) miles

Choose from the below words

7.8

2.6

5.2

10.3

167.

3.What is the correlation coefficient (rounded to the nearest thousandth)?

(a)

Does this situation represent association only, causation or neither? (b)

Choose from the below words

.129

.046

.997

-.994

causation

association only

neither

168.

4.What does the correlation coefficient reveal about the strength of the linear association between the runner's distance and the duration of his run?

(a) correlation

Choose from the below words

weak positive

moderate positive

strong negative

no

strong positive

weak negative

moderate negative

169.

5.What does each correlation coefficient say about the relationship between x and y?

a)

Strong positive

1.

r = 0.78

b)

Weak positive

2.

r = 0.23

c)

Strong negative

3.

r = -0.89

d)

Weak negative

4.

r = -0.14

e)

Moderate positive

5.

r = 0.50

170.

6.

A perfect negative correlation has a correlation coefficient of (a) .

A perfect positive correlation has a correlation coefficient of (b) .

A scatterplot with No correlation has a correlation coefficient of (c) .

Choose from the below words

1

0

.33

-.67

.67

-.33

-1

171.

7.Estimate the correlation coefficient

(a)

Interpret the strength of the relationship. (b)

Choose from the below words

r = 1

r = -1

r ≈ -0.8

r ≈ 0.8

r ≈ -0.5

strong negative

strong positive

moderate negative

weak negative

no correlation

172.

8.Data is analyzed comparing hours studied and grades. It is determined that the correlation coefficient is 0.92. What does this mean?

a)

There is a strong positive correlation between studying and grades.

b)

There is a strong negative correlation between studying and grades.

c)

There is a weak positive correlation between studying and grades.

d)

There is a weak negative correlation between studying and grades.

173.

9.Based on the scatter plot, which statement best describes the trend?

a)

As the daily temperature increases, the number of beach visitors increases.

b)

As the daily temperature decreases, the number of beach visitors increases.

c)

As the daily temperature increases, there is no change in the number of beach visitors

d)

As the daily temperature increases, the number of beach visitors decreases

174.

10.What is the correlation coefficient, and what does it say about the line?

a)

-.99 weak negative relationship

b)

-.99 strong negative relationship

c)

.99 strong positive relationship

d)

.99 weak positive relationship

175.

11. Look at the two scatterplots. After using linear regression, a line of best fit has been calculated. Which plot do you believe has the higher correlation coefficient? (a)

Explain your reasoning. (b)

Choose from the below words

Plot A

The points are closer together.

Plot B

The points are farther apart.

The points are going up.

The points are all on the line.

176.

Determine the correlation of the points on the scatterplot.

a)

Positive Correlation

b)

Negative Correlation

c)

No Correlation

d)

Zero Correlation

177.

Determine the correlation of the points on the scatterplot.

a)

Positive Correlation

b)

Negative Correlation

c)

No Correlation

d)

Zero Correlation

178.

Determine the correlation of the points on the scatterplot.

a)

Positive Correlation

b)

Negative Correlation

c)

No Correlation

d)

Zero Correlation

179.

The table shows the lengths and corresponding ideal weights of sand sharks. Which r-value is more accurate for the data?

a)

r = 0.99

b)

r = -0.90

c)

r = 0.09

d)

r = -0.099

180.

Does the following scatterplot represent a function? Why or why not?

4 lines

181.

The table shows the attendance at a flag football game for the first 8 games of the season. What is the correlation of the data?

a)

Strong Positive

b)

Strong negative

c)

Weak Postive

d)

Weak Negative

e)

No correlation

182.

Determine the line of best fit for the data shown.

a)

$y\ =\ -10.63x-3.80$

b)

$y=3.88x-10.63$

c)

$y=3.87x+0.90$

d)

$y=3.88x-11$

183.

If the correlation coefficient, r, of a data set is r = 0. 32. What type of correlation does the data have?

a)

Strong Positive

b)

Strong negative

c)

Weak Postive

d)

Weak Negative

e)

No correlation

184.

The table below gives the height and the shoe sizes of six male students. Predict the height of a student that has a shoes size of 10.

a)

-40.23

b)

-15.60

c)

0.42

d)

-15.39

185.

The table gives the number of hours spent studying for an algebra exam (x) and the final exam (y). Determine the correlation of the data.

a)

Weak positive

b)

Weak Negative

c)

Strong Positive

d)

Strong Negative

186.

A student who waits on tables at a restaurant recorded the cost of meals and the tip left by single diners. If the next diner orders a mean costing $14.50 , how much tip should the waiter wait to receive.

a)

$0.75

b)

$1.01

c)

$2.25

d)

$1.98

187.

If the correlation coefficient, r, of a data set is r = -0.95. What type of correlation does the data have?

a)

Strong Positive

b)

Strong negative

c)

Weak Postive

d)

Weak Negative

e)

No correlation

188.

A perfect positive correlation has a correlation coefficient of ____.

a)

1

b)

-1

c)

0

189.

Estimate the correlation coefficient for this scatterplot.

a)

A) r = -0.9

b)

B) r = 1

c)

C) r = 0.9

d)

D) r = -1

190.

A perfect negative correlation has a correlation coefficient of ____.

a)

1

b)

-1

c)

0

191.

Which graph depicts the strongest positive correlation?

a)

b)

c)

d)

192.

r=-0.89

a)

Strong positive

b)

Weak positive

c)

Strong negative

d)

Weak negative

193.

Is this line an accurate line estimate of best fit for the data?

a)

Yes

b)

No

194.

If the correlation coefficient, r, of a data set is r = -0.95. What type of correlation does the data have?

a)

Strong Positive

b)

Strong negative

c)

Weak Postive

d)

Weak Negative

e)

No correlation

195.

If the correlation coefficient, r, of a data set is r = 0. 32. What type of correlation does the data have?

a)

Strong Positive

b)

Strong negative

c)

Weak Postive

d)

Weak Negative

e)

No correlation

196.

What type of correlation does this graph show?

a)

A) Positive

b)

B) negative

c)

C) none

d)

D) all of the above

197.

Estimate the correlation coefficient

a)

r = 1

b)

r = -1

c)

r ≈ -0.8

d)

r ≈ 0.8

e)

r ≈ -0.5

198.

Which scatter plot diagram shows the strongest positive correlation?

a)

b)

c)

d)

199.

Which graph represents data that has a correlation coefficient close to -1?

a)

b)

c)

d)

200.

Which scatter plot would use $y=\frac{1}{2}x+2$ as line of best fit?

a)

b)

c)

d)

201.

What is the equation of the line of best fit?

a)

y= $-\frac{1}{2}x\ +\ 6$

b)

y= $\frac{1}{2}x\ +6$

c)

y= 6x + 2

d)

y = -2x +6

202.

The linear model to represent the distance (in miles) traveled given the time (in hours) driving is

m=-1.79+61.93h

. Predict how far a person will travel driving 10 hours.

a)

617.51 miles

b)

621.09 miles

c)

100 miles

d)

0.19 miles

203.

Which of the following best describes the correlation shown on the graph?

a)

negative correlation

b)

positive correlation

c)

no correlation

204.

Which of the following best describes the correlation shown on the graph?

a)

negative correlation

b)

positive correlation

c)

no correlation

205.

Which of the following best describes the correlation shown on the graph?

a)

negative correlation

b)

positive correlation

c)

no correlation

206.

Which of the following best describes the correlation shown on the graph?

a)

negative correlation

b)

positive correlation

c)

no correlation

207.

Which of the following best describes the correlation shown on the graph?

a)

negative correlation

b)

positive correlation

c)

no correlation

208.

Which of the following best describes the correlation shown on the graph?

a)

negative correlation

b)

positive correlation

c)

no correlation

209.

Which of the following best describes the correlation shown on the graph?

a)

negative correlation

b)

positive correlation

c)

no correlation

210.

Which of the following best describes the correlation shown on the graph?

a)

negative correlation

b)

positive correlation

c)

no correlation

211.

Which of the following best describes the correlation shown on the graph?

a)

negative correlation

b)

positive correlation

c)

no correlation

212.

Which of the following best describes the correlation shown on the graph?

a)

negative correlation

b)

positive correlation

c)

no correlation

213.

Which correlation coefficient (r) best represents the graph?

a)

r = -1

b)

r = 0

c)

r = 1.4

d)

r = 1

214.

Which correlation coefficient (r) best represents the graph?

a)

r = -0.95

b)

r = 0

c)

r = -1.4

d)

r = 1

215.

Which correlation coefficient (r) best represents the graph?

a)

r = -0.95

b)

r = 0

c)

r = 2

d)

r = 1

216.

Which correlation coefficient (r) best represents the graph?

a)

r = -0.95

b)

r = 0

c)

r = 0.85

d)

r = 1.1

217.

Which correlation coefficient (r) best represents the graph?

a)

r = -0.95

b)

r = 0

c)

r = 0.85

d)

r = 1.1

218.

The numbers of games won by 12 teams in the national league is below:

11, 5, 6, 6, 9, 10, 19, 14, 11, 9, 9, and 6

Are there any outliers?

a)

Yes, 5 is an outlier

b)

Yes, 19 is an outlier

c)

Yes, 5 and 19 are outliers

d)

No

219.

Calculate the interquartile range of the following data:
17, 18, 18, 19, 20, 21, 21, 23, 25

a)

3

b)

4

c)

5

d)

8

220.

What is the interquartile range?

a)

4

b)

6

c)

2

d)

8

221.

Which car club has the higher median?

a)

Cruisers

b)

Car Hops

222.

What data value is the upper quartile (Q3)?

a)

64

b)

62

c)

66

d)

58

223.

Which of the following best describes the process of finding the interquartile range for a set of data?

a)

Add the biggest and smallest numbers.

b)

Place the numbers in order from least to greatest and find the middle.

c)

Find the difference between the maximum and the minimum.

d)

Subtract Q1 from Q3.

224.

About 50 % of the data values are greater than...

a)

12

b)

15

c)

22

d)

31

225.

Given the information below, determine which of the answer choices would be considered an outlier.

Q1: 15

Median: 27

Q3: 35

a)

3

b)

82

c)

63

d)

all of the above

226.

Given the information below, determine which of the answer choices would be considered an outlier.

Q1: 48

Median: 65

Q3: 90

a)

5

b)

63

c)

149

d)

none of the above

227.

Which box plot represents the data set below?

22, 34, 25, 32, 41, 21, 23, 36, 37, 30, 38, 44, 32, 45

a)

b)

c)

d)

228.

What is the minimum value?

a)

64

b)

58

c)

66

d)

60

229.

What is the median?

a)

62

b)

58

c)

66

d)

60

230.

How do you calculate the IQR (interquartile range) ?

a)

Q2 - Q1

b)

Q1 - Q3

c)

Q3 - Q2

d)

Q3 - Q1

231.

What is the interquartile range of these scores?

a)

50

b)

70

c)

40

d)

30

232.

Find the interquartile range using the following.
Minimum: 1
Q1: 3
Median: 5
Q3: 7
Maximum: 9

a)

8

b)

4

c)

5

d)

10

233.

What is the range of homework assignments for class 2?

(a)

234.

What is the IQR for class 1?

(a)

235.

What do points B and D represent on the box plot?

a)

Mean and Mode

b)

Mean and Median

c)

Least and Greatest Value

d)

First and Third Quartiles

236.

What percentage of the data is between 90 and 140?

a)

25 %

b)

50%

c)

75%

d)

100%

237.

What amount of cupcakes makes up the middle 50% of the data?

a)

16-22 cupcakes

b)

12-32 cupcakes

c)

22-28 cupcakes

d)

16-28 cupcakes

238.

33, 25, 42, 25, 31, 37, 46, 29, 38
What is the third quartile of the data?

a)

37

b)

38

c)

40

d)

46

239.

A cell phone company recorded the number of apps on teen cell phones at the time of transfer. The information is summarized in the box plot shown below.
Based on the box plot, which of the following is not true?

a)

75% of the cell phones had ≥ 33 apps

b)

50% of the cell phones had ≤ 29 apps

c)

25% of the cell phones had ≤ 23 apps

d)

100% of the cell phones had ≥ 20 apps

240.

Which two values would give this data set a mean of 86, a median of 84, and a range of 18?

80, 82, ___, 86, ___

(enter them least to greatest)

(a)

241.

Matthew conducts a survey for which he collects people’s ages. The results of Matthew’s survey are shown.

• Group 1: 40 30 20 35

• Group 2: 24 32 26 45

• Group 3: 20 36 36 30 36

Order the groups based on their mean.

a)

Group 1

b)

Group 3

c)

Group 2

1)

2)

3)

242.

Three values are missing from the data set. Given that the mode is 44, the mean is 58, the range is 44, and the data is in ascending order, find the missing values.

a)44

b)98

c)70

d)50

e)80

1

2

3

1)

2)

3)

243.

You want to retake two quizzes out of the five you have taken this semester.

Your scores on the other three were 86, 92, and 95. You want the mean to be 93. The range ends up being 12. What are possible scores to satisfy these conditions?

a)

94, 98

b)

92, 100

c)

90, 98

d)

94, 96

Unit 7 Review

Total questions: 243

Worksheet time: 10hrs 49mins

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