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Statistical Analysis Practice

Total questions: 95

Worksheet time: 5hrs 5mins

Name
Class
Date
1.
Explain why this graph may be misleading?
a)
the x-axis does not have equal intervals
b)
San Fransisco is not a real city
c)
you cannot have percents in a line graph
d)
the y-axis does not have equal intervals
2.
The graph shows the results of a survey to determine student's favorite pets. Why is this graph misleading?
a)
The slices are the wrong color
b)
The slices are not the correct size
c)
The percents do not add up to 100
d)
Not misleading
3.
What is misleading about this graph?
**choose the best answer
a)
Nothing is misleading about this graph.
b)
The democrats are too high.
c)
The y-axis does not start at zero, so it makes the democrats look much higher than the other two parties.
4.

Why is this graph misleading?

a)

broken scale (doesn't start at 0)

b)

uneven values on vertical axis

c)

unequal spacing of lines

d)

none of the above

5.

Alden wanted to impress his parents by showing the rapid increase in his score on 5 tests. Which graph should he use to impress them?

a)

Graph 1

b)

Graph 2

c)

Neither

d)

Both

6.

Which graph is misleading?

a)

graph 1

b)

graph 2

c)

graph 3

d)

graph 2 and 3

7.

What is the error in this graph?

a)

Title for the bar graph

b)

width of a bar

c)

key is not appropriate

d)

scale is not even

8.
Why is this graph misleading?
a)
Graphed incorrectly
b)
Does not start at 0
c)
The break makes it seem like most players only had a few wins
d)
Not misleading
9.

What is wrong with this graph?

a)

Not enough information.

b)

The basketball ticket prices in 2001 were approximately 2 times as much as 1991, yet the size of the basketballs are about 4 times as big.

c)

y axis scale is not uniform

10.

Which is the best graph?

a)
b)
c)
d)
11.

What is the best way to protect yourself against misleading graphs?

a)

A.) Look at the visual representation only.

b)

B.) Never trust graphed data again.

c)

C.) Read the labels, the scale, the numbers, and the context.

d)

D.) Look only at the curves and the trend of the data.

12.
Shape?
a)

Skewed positively

b)

Skewed negatively

c)

Symmetrical

d)

bimodal

13.

What is the shape of this bar graph?

a)

Skew right

b)

Skew left

c)

Symmetrical

d)

uniform

14.
Describe the histogram:
a)

Negatively Skewed

b)
Normal/Symmetrical
c)

Positively Skewed

d)

outliers

present - uncertain

15.
a)

negatively skewed

b)

positively skewed

c)

symmetrical

16.

The shape of the data is positively skewed

a)
TRUE
b)
FALSE
17.
What is the interquartile range?
a)
4
b)
6
c)
2
d)
8
18.

Describe the shape of Daniel's data

a)

skewed left

b)

skewed right

c)

symmetrical

19.

Describe the shape of the data.

a)

Symmetrical

b)

Positively Skewed

c)

Negatively Skewed

d)

Skewed

20.

A car salesman records information about the cars he is selling. The number of doors is _____ data

a)

Nominal

b)

Continuous

c)

Discrete

d)

Ordinal

21.

A car salesman records information about the cars he is selling. The colour of each car is _____ data

a)

Nominal

b)

Continuous

c)

Discrete

d)

Ordinal

22.

A woman is looking at a small, medium and large dress size. What data type does this example represent?

a)

Categorical: Nominal

b)

Categorical: Ordinal

c)

Numerical: Discrete

d)

Numerical: Continuous

23.

A scientist is measuring the volume of air in a balloon. What data type does this example represent?

a)

Categorical: Nominal

b)

Categorical: Ordinal

c)

Numerical: Discrete

d)

Numerical: Continuous

24.

A statistician is counting the amount of goals scored by a hockey team. What data type does this example represent?

a)

Categorical: Nominal

b)

Categorical: Ordinal

c)

Numerical: Discrete

d)

Numerical: Continuous

25.

Film Classifications Australia must complete the rating of a new movie release between G Rated - R18+ Rated. What data type does this example represent?

a)

Categorical: Nominal

b)

Categorical: Ordinal

c)

Numerical: Discrete

d)

Numerical: Continuous

26.

A coach measures the running time of their athletic team. What data type does this example represent?

a)

Categorical: Nominal

b)

Categorical: Ordinal

c)

Numerical: Discrete

d)

Numerical: Continuous

27.

The height of a tree is being measured over time. What data type does this example represent?

a)

Categorical: Nominal

b)

Categorical: Ordinal

c)

Numerical: Discrete

d)

Numerical: Continuous

28.
What is the median of the data?
a)
200
b)
100
c)
90
d)
140
29.
What is the interquartile range?
a)
4
b)
6
c)
2
d)
8
30.
Which restaurant has a higher median wait time?
a)
Lucy's Steakhouse
b)
Gary's Grill
c)
They are the same
31.
Which car club has the higher median?
a)
Cruisers
b)
Car Hops
32.
What is the minimum value?
a)
64
b)
58
c)
66
d)
60
33.
What data value is the upper quartile (Q3)?
a)
64
b)
62
c)
66
d)
58
34.
What value is the lower quartile?
a)
66
b)
58
c)
60
d)
64
35.

What data value is the upper quartile? (Q3)

a)
64
b)
62
c)
66
d)
58
36.
What is the interquartile range (IQR) of the data set?
a)
20
b)
25
c)
5
d)
10
37.
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.
38.
Find the Maximum
a)
14
b)
20
c)
5
d)
12
39.
What is the IQR of the Cruisers?
a)
4
b)
6
40.
What is the term for the median of the lower half of the data?
a)
Lower Quartile
b)
Upper Quartile
c)
Median
d)
Maximum
41.
Which box and whisker plot has the highest median?
a)
Top plot
b)
Bottom plot
42.
a)
only Hayes Road is symmetric
b)
Hayes Road's center is at 60
c)
Jefferson Road's center is at 55
d)
only Jefferson Road is symmetric
43.
a)
the speed on Hayes Road is greater than the speed on Jefferson Road
b)
the speed on Jefferson Road is greater than the speed on Hayes Road
c)
these data sets contain no outliers
d)
the center of the data set are the same
44.
a)
neither plot has an outlier
b)
Hayes Road is skewed right
c)
Jefferson Road's spread is less than Hayes Road's spread
d)
Hayes Road's center is at 55
45.
a)
only one of the data sets is symmetric
b)
the median in 1st period is greater than the median in 5th period
c)
the highest test score is the same in both classes
d)
the interquartile range is larger in 1st period than in 5th period
46.
a)
the spread for Sophie's Cafe is greater than Red Brick Grill
b)
the spread for Red Brick Grill is greater than Sophie's Cafe
c)
both are symmetric
d)
the median prices are the same for both
47.

Find the range of the data.

63, 71, 65, 66, 87, 53

a)

32

b)

33

c)

34

d)

35

48.

Find the median, first quartile, third quartile, and interquartile range of the data.

32, 53, 72, 66, 47, 54, 49, 67, 71

MAke sure you can do this on your GC and also draw a box plot in real life and on your GC

a)

Median: 54

First Quartile: 49

Third Quartile: 67

IQR: 18

b)

Median: 54

First Quartile: 48

Third Quartile: 69

IQR: 21

c)

Median: 54

First Quartile: 48

Third Quartile: 69

IQR: 22

d)

Median: 54

First Quartile: 49

Third Quartile: 69

IQR: 20

49.

Find the median, first quartile, third quartile, and interquartile range of the data.

203, 183, 212, 181, 157, 204, 189, 190

a)

Median: 189

First Quartile: 182

Third Quartile: 203

IQR: 21

b)

Median: 189.5

First Quartile: 182

Third Quartile: 203

IQR: 21

c)

Median: 189

First Quartile: 182

Third Quartile: 203.5

IQR: 21.5

d)

Median: 189.5

First Quartile: 182

Third Quartile: 203.5

IQR: 21.5

50.

Find the median, first quartile, third quartile, and interquartile range of the data.

23, 33, 25, 16, 27, 43, 29, 40, 35

a)

Median: 29

First Quartile: 24

Third Quartile: 37.5

IQR: 13.5

b)

Median: 27

First Quartile: 25

Third Quartile: 35

IQR: 10

c)

Median: 29

First Quartile: 25

Third Quartile: 37.5

IQR: 12.5

d)

Median: 27

First Quartile: 24

Third Quartile: 35

IQR: 11

51.
What is the range?
a)
average
b)
biggest-smallest
c)
the middle #
d)
# happening the most
52.

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

53.

What is the standard deviation for the data given:

12, 13, 29, 18, 61, 35, 21

You should be able to do this with the formula and on your GC

a)

293.67

b)

15.87

c)

17.14

d)

41.98

54.
Find the mean of these numbers:
5,11,2,12,4,2
a)
4.1
b)
6
c)
4.5
d)
4
55.
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
56.
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
57.
What percentage of males drive sports cars?
a)
35%
b)
16.25%
c)
65%
d)
25%
58.
How many chemical engineers chose Science as their favorite subject?
a)
80
b)
91
c)
171
d)
262
59.
What percentage of the days that it rained, did they forecast no rain?
a)
About 20%
b)
About 18%
c)
About 14%
d)
About 12%
60.

How many male students were surveyed?

a)

30

b)

29

c)

50

d)

59

61.

How many total people were surveyed?

a)

78

b)

22

c)

70

d)

100

62.

How many total have an MP3 player?

a)

13

b)

57

c)

70

d)

100

63.

What number should go in the blue box?

a)

21

b)

135

c)

19

d)

22

64.
How many students were surveyed total?
a)
116
b)
182
c)
81
d)
298
65.
How many students in the 8th grade were surveyed?
a)
182
b)
116
c)
81
d)
298
66.

How many total did not attend the school play?

a)

63

b)

15

c)

78

d)

221

67.

How many attended the basketball game but did not attend the school play?

a)

63

b)

55

c)

118

d)

88

68.

How many people passed Art?

a)

1

b)

3

c)

19

d)

7

69.

How many students studied English?

a)

38

b)

25

c)

26

d)

1

70.

How many students were sureveyed altogether?

a)

40

b)

45

c)

100

d)

90

71.

Allie wants to learn the most popular board game in the Australia, so she creates a poll and shares it on Twitter. Random or Biased?

a)

Random

b)

Biased

72.

Anna wants to find out how Year1 0s at Wildy get to school so she places the names of all Year 10s into a fish bowl and pulls out 50 names so she can survey them. Random or Biased?

a)

Random

b)

Biased

73.

A science teacher at Wildy wants to find out what is the most popular pet of students so she puts every student's name into a bucket and polls 30 students. Random or Biased?

a)

Random

b)

Biased

74.

The student council sponsor asked every 10th student in the lunch line how they would prefer to be contacted with school news. Random or Biased?

a)

Random

b)

Biased

75.

At her Rowing Training, Katie surveyed the athletes on her team to determine which sport teenagers like best. Random or Biased?

a)

Random

b)

Biased

76.

A manager of a popular restaurant samples the receipts of every fifth customer to see if a dessert was ordered. Random or Biased?

a)

Random

b)

Biased

77.
_______ is the entire group of objects or individuals considered for a survey.
a)
Sample
b)
Population
c)
Random Sample
d)
Quartile
78.
The manager of a book store surveys people who buy mystery novels to see if the store should expand its hours.  What is the population?
a)
People who visit the bookstore.
b)
People who buy mystery novels.
c)
Residents of the town
d)
People who like to read.
79.
We want to know what the most popular sports brand in school is. What is the population?
a)
Everybody in the school
b)

All year 10 students

c)

Everyone in the Senior School

80.

Mary wanted to know what 10C's favourite food was so she asked everybody in 10C.

a)
Census
b)
Sample
81.

Complete the definition:

A _________ consists of all subjects (human or otherwise) that are being studied

a)

Statistics

b)

Number

c)

People

d)

Population

e)

Pueblo

82.

Complete the definition:

A _______ is a subset of a population

a)

sample

b)

sampel

c)

people

d)

statistics

e)

group

83.

Population or Sample?

A survey of 1353 Australian households found that 18% of the households own a desktop computer.

a)

Population

b)

Sample

84.

Population or Sample?

A recent survey of 2625 primary school children found that 48% of the children were spending more than the recommended amount of hours on electronic devices.

a)

Population

b)

Sample

85.

Population or Sample?

All of the teachers in a school are surveyed on their meeting time preferences.

a)

Population

b)

Sample

86.

Population or Sample?

Every fifth customer exiting a restaurant is surveyed on how well they liked the food.

a)

Population

b)

Sample

87.
A musician wanted to see what people who bought his last album thought about the songs.
Which choice best represents a sample?
a)
Every person who bought the album.
b)
A selection of people who didn't want to buy the album.
c)
250 girls who bought the album.
d)
A selection of 3,294 people who bought the album.
88.

A mayor wanted to see if the people in her area thought she was doing a good job. Which choice best represents a sample?

a)
1,000 unemployed voters
b)
The mayor's family
c)

The residents of the area

d)
242 voters
89.

50 % of cars recorded on which road were travelling faster than 45mph?

a)

Jesfferson Road

b)

Hayes Road

90.
a)

25% of all top selling lunch items at Sophie's Cafe are $8 or more

b)

50% of all top selling lunch items at The Red Brick Grill are $7 or more

c)

50% of all top selling lunch items at The Red Brick Grill cost less than $5

d)

25% of all top selling lunch items at Sophie's Cafe cost less than $7

91.

The Sample standard deviation formula is

a)

True

b)

False

92.

I can use my graphics calcultor to calculte Mean, median and mode.

a)

Yes

b)

No

93.

I can use my Graphics claculator to calculte the Standard deviation of a sample.

a)

Yes

b)

No

94.

I can use the formula to find the standard deviation of a sample?

a)

No

b)

Yes

95.

I can draw boxplots with my Graphic calcultor and by hand.

a)

No

b)

Yes