Quiz about Unit 4 Test: Review

Question 1

There are two measures of center.

Accepted Answer

True

Answer

False

Question 2

The mean is a measure of center.

Accepted Answer

True

Answer

False

Question 3

The mean should be used as the measure of center when there are outliers.

Accepted Answer

False

Answer

True

Question 4

The Interquartile Range (IQR) is found by subtracting Q3 from Q1 (Q1 - Q3).

Accepted Answer

False

Answer

True

Question 5

Complete the following: "The following box-and-whisker plot is  _______________."

Accepted Answer

skewed right

Answer

skewed left

Answer

symmetric

Question 6

Complete the following: "The following box-and-whisker plot is  _______________."

Accepted Answer

skewed left

Answer

skewed right

Answer

symmetric

Question 7

Determine which option is not true.

Accepted Answer

Class #1 had a lower Q1.

Answer

Class #1 had a greater median.

Answer

Class #2 has a greater max.

Answer

Class #2 had a greater Q3.

Question 8

Find the Interquartile Range (IQR) of the following box-and-whisker plot.

Accepted Answer

5

Answer

8

Answer

3

Answer

6

Question 9

Question 9.

Accepted Answer

31

Answer

29

Answer

32

Answer

23

Question 10

Question 10.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 11

Question 11.

Accepted Answer

14

Answer

16

Answer

11

Answer

20

Question 12

Question 12.

Accepted Answer

31

Answer

25

Answer

30

Answer

40

Question 13

The data below represents the number of runners on each cross country team in the Northern Conference.
12, 15, 15, 17, 19, 19, 20, 22, 24
Which box plot correctly summarizes the data?

Accepted Answer

Middle

Answer

Top

Answer

Bottom

Question 14

A store manager counts the number of customers who make a purchase in his store each day.
The data are as follows.
10, 11, 8, 14, 7, 10, 10, 11, 8, 7
Which dot plot represents the data?

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 15

What is the range in gas mileage for cars?

Accepted Answer

6

Answer

2

Answer

10

Answer

4

Question 16

Is the SUV's dot plot skewed to the left or right?

Accepted Answer

Right

Answer

Left

Question 17

What is the difference in the median gas mileage?

Accepted Answer

5

Answer

0

Answer

7

Question 18

What is the difference in IQR's?

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 19

What is the difference in Q3's?

Accepted Answer

None

Answer

2

Answer

3

Answer

4

Question 20

What percentage of males surveyed drive sports cars?

Accepted Answer

65%

Answer

35%

Answer

16.25%

Answer

25%

Question 21

What percentage of SUV's are driven by the women in reference to the total amount of people surveyed?

Accepted Answer

56.25%

Answer

83.25%

Answer

65%

Answer

86.50%

Question 22

How many people purchased no food and no drink?

Accepted Answer

10

Answer

60

Answer

20

Answer

200

Question 23

Brandon has answered 20 out of the 25 questions on a test. What percentage of the test questions has Brandon answered?

Accepted Answer

80%

Answer

12.5%

Answer

45%

Answer

95%

Question 24

The two-way frequency table shows how many cars were sold at a car dealership in a month. What color is the least popular at the car dealership?

Accepted Answer

White

Answer

Red

Answer

Blue

Answer

Green

Question 25

What percentage of girls have blonde hair?

Accepted Answer

30

Answer

32

Answer

28

Answer

40

Question 26

What is the conditional relative frequency for selecting a teen who likes chocolate in relation to the total amount of teens?

Accepted Answer

.267

Answer

.112

Answer

.164

Answer

.056

Question 27

What is the marginal frequency of children?

Accepted Answer

77

Answer

107

Answer

22

Answer

65

Question 28

True or False: "268 people were surveyed."

Accepted Answer

False

Answer

True

Question 29

What type of correlation describes the scatter plot?

Accepted Answer

Negative

Answer

Positive

Answer

No Correlation.

Question 30

What type of correlation describes the scatter plot?

Accepted Answer

No Correlation

Answer

Positive

Answer

Negative

Question 31

Which of the following is line of best fit to the graph of the data below.

Accepted Answer

f(x) = 1.82x + 5.02

Answer

f(x) = 5x + 1.82

Answer

f(x) = 3.2x + 4

Answer

Cannot be determined.

Question 32

Find the slope of the line.

Accepted Answer

-2.5

Answer

-.4

Answer

.50

Answer

-.25

Question 33

Which scatter plot shows a linear relationship between x and y?

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 34

True or False: "According to the residual plot shown, a linear model would be most appropriate."

Accepted Answer

True

Answer

False

Question 35

True or False: "According to the residual plot shown, a linear model would be most appropriate."

Accepted Answer

False

Answer

True

Question 36

Which sentences describes the relationship shown in the scatter plot?

Accepted Answer

As the temperature increases, the amount of visitors increases.

Answer

As the temperature decreases, the amount of visitors increases.

Answer

As the number of visitors increase, the temperature decreases.

Answer

No correlation.

Question 37

Use the equation to predict how far this person will travel after driving for 10 hours.

Accepted Answer

617.5 miles

Answer

10.25 miles

Answer

700.35 miles

Answer

.19 miles

Question 38

The linear regression equation is y = 61.93x - 1.79. According to the model, the slope can be interpreted as:

Accepted Answer

They drove at a speed of 61.93 miles per hour.

Answer

After 0 hours of driving, they went 61.93 miles.

Answer

They drove 61.93 miles total.

Answer

They drove 61.93 hours total.

Question 39

Write the equation of a line that crosses the points (8, 5) and
(12, 8).

Accepted Answer

y = (3/4)x - 1

Answer

y = (4/3)x - 8

Question 40

Question 40.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 41

Which equation represents the line that passes through the points (1, 5) and (3, 1)?

Accepted Answer

y = -2x + 7

Answer

y = -2x + 11

Answer

y = 2x - 9

Answer

y = 2x + 3

Question 42

True or False: "The equation of the line that passes through the points (1, 6) and (3, -4) is y = -5x + 9."

Accepted Answer

False

Answer

True

Question 43

A correlation coefficient value of
r = .92 indicates:

Accepted Answer

a strong positive correlation

Answer

a weak positive correlation

Answer

a strong negative correlation

Answer

no correlation

Question 44

True or False: "In order to calculate the mean, setting the numbers in order from least to greatest is necessary."

Accepted Answer

False

Answer

True

Question 45

True or False: "In order to calculate the median, setting the numbers in order from least to greatest is necessary."

Accepted Answer

True

Answer

False

Question 46

Question 46.

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 47

Question 47.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 48

What is the median of the following data set?

Accepted Answer

41

Answer

38

Answer

38.5

Answer

36.5

Question 49

Question 49.

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 50

What is the definition of the mathematical word: mean?

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 51

Question 51.

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 52

Question 52.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 53

Question 53.

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 54

Question 54.

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 55

Question 55.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 56

What is the Interquartile Range (IQR) of the following data?

Accepted Answer

13

Answer

43

Answer

8

Answer

21

Question 57

What is the Q3 of the data set?

Accepted Answer

21

Answer

43

Answer

8

Answer

13

Question 58

What is the Q1 of the data set?

Accepted Answer

8

Answer

43

Answer

21

Answer

13

Question 59

Recall how to find outliers, after one determines the data set's IQR, what number does one multiply the IQR by?

Accepted Answer

1.5

Answer

2.0

Answer

1

Answer

2.5

Question 60

A

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 61

Describe the correlation to "The number of siblings you have and your weight."

Accepted Answer

No correlation

Answer

Positive correlation

Answer

Negative correlation

Answer

All of the above

Question 62

As the age of the car increases, its value decreases. Which scatterplot represents this relationship?

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 63

Select the statement that best describes the line.

Accepted Answer

The line is NOT a line of best fit because it does not go through the middle of the data set.

Answer

The line is the line of best fit.

Answer

The line is NOT a line of best fit because it does not go through the origin.

Question 64

What percentage of the students have brown hair?

Accepted Answer

45%

Answer

25%

Answer

60%

Answer

50%

Unit 4 Test: Review

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