AnswersStatistical ReasoningStatistical Modeling

Practice Test Answers

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1
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Which of the following is the missing value?

A
0 point 2 7
B
0 point 3 7
C
0 point 5 0
D
0 point 3 0
2
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The lowest possible passing grade on the test was a 54 out of 90 What percentage of students passed this test?

A
96 percent
B
54 percent
C
77 percent
D
23 percent
3

What error did she make in creating the graph?

A
Maya turned each category of data into percentages in the graph instead of leaving the quantities in the table.
B
Maya forgot to include the number of students taller than 72 ″ who play tennis.
C
Maya should have found and included the totals for each row.
D
Maya forgot to switch the rows and the columns.
4

What is the mean resting heart rate for this sample?

A
69 point 0 beats per minute
B
66 point 0 beats per minute
C
69 point 9 beats per minute
D
70 point 0 beats per minute
5

Which of the following displays is a relative frequency bar graph?

A
Image with description A bar graph titled eye color has color on the x-axis. Blue, 8; brown, 10; green, 6; hazel, 5; gray, 1.
B
Image with description A bar graph titled Caffeinated Drinks has drink on the x-axis. Coffee, 9; tea, 8; soda, 8; energy, 3.
C
Image with description A bar graph titled social media preferences has platform on the x-axis. Upstart, 0.10; Aster, 0.25; Babble, 0.30; Techy, 0.35.
D
Image with description A bar graph titled social media preferences has platform on the x-axis . Upstart, 4; Aster, 18; Babble, 15; Techy, 12.
6

A golf course has 18 holes. A guidebook provided to golfers includes useful information about each hole. The individuals in this data set are shown. Hole Number Yards Bunkers Difficulty Level 1 312 2 moderate 2 530 5 moderate 3 147 1 easy 4 350 0 moderate 5 410 2 hard 6 185 1 moderate Which of the variables in the data set is a categorical variable?

A
hole number
B
yards
C
difficulty level
D
bunker
7

As an introduction to probability, a student is asked to roll a fair, six-sided number cube seven times. The results of those seven rolls are shown. 1 , 4 , 4 , 4 , 4 , 6 , 5 What is the IQR of the data?

A
5
B
2
C
1
D
1 point 5 3
8

A statistics student gave a survey to students which asked how many first cousins they have. The data from the first nine responses are shown. 6 , 2 , 7 , 8 , 8 , 8 , 5 , 10 , 10 What is the standard deviation of the data?

A
6 point 3 6 first cousins
B
2 point 3 8 first cousins
C
5 point 6 5 first cousins
D
2 point 5 2 first cousins
9

A website lists homes for sale in a suburban town. The site provides information, including neighborhood, selling price, number of bedrooms, and whether the home has a garage. What are the individuals in this setting?

A
selling prices
B
neighborhoods
C
homes
D
bedrooms
10

The French Club was surveyed about the next region to research. The two-way table represents the survey results. Belgium Canada Haiti Tenth Grade 8 6 9 Eleventh Grade 10 18 7 Total 18 24 16 Which segmented bar graph best matches the data?

A
Image with description A segmented bar graph titled Student Interest in Country by Grade. The vertical axis is labeled from 0 percent to 100 percent in increments of 20 percent, with grid lines every 10 percent. The horizontal axis has three categories labeled Belgium, Canada, and Haiti. A legend below indicates the segments represent Tenth Grade and Eleventh Grade from bottom to top. Each category shows a stacked bar reaching 100 percent. The Belgium bar has a Tenth Grade segment from 0 percent to 44 percent, and an Eleventh Grade segment from 44 percent to 100 percent. The Canada bar has a Tenth Grade segment from 0 percent to 25 percent, and an Eleventh Grade segment from 25 percent to 100 percent. The Haiti bar has a Tenth Grade segment from 0 percent to 56 percent, and an Eleventh Grade segment from 56 percent to 100 percent.
B
Image with description A segmented bar graph titled Student Interest in Country by Grade. The vertical axis is labeled from 0 percent to 100 percent in increments of 20 percent, with grid lines every 10 percent. The horizontal axis has three categories labeled Belgium, Canada, and Haiti. A legend below indicates the segments represent Tenth Grade, Eleventh Grade, and Total from bottom to top. Each category shows a stacked bar reaching 100 percent. The Belgium bar has a Tenth Grade segment from 0 percent to 48 percent, an Eleventh Grade segment from 48 percent to 85 percent, and a Total segment from 85 percent to 100 percent. The Canada bar has a Tenth Grade segment from 0 percent to 60 percent, an Eleventh Grade segment from 60 percent to 82 percent, and a Total segment from 82 percent to 100 percent. The Haiti bar has a Tenth Grade segment from 0 percent to 38 percent, an Eleventh Grade segment from 38 percent to 85 percent, and a Total segment from 85 percent to 100 percent.
C
Image with description A segmented bar graph titled Student Interest in Country by Grade. The vertical axis is labeled from 0 percent to 100 percent in increments of 20 percent, with grid lines every 10 percent. The horizontal axis has three categories labeled Belgium, Canada, and Haiti. A legend below indicates the segments represent Tenth Grade and Eleventh Grade from bottom to top. Each category shows a stacked bar reaching 100 percent. The Belgium bar has a Tenth Grade segment from 0 percent to 56 percent, and an Eleventh Grade segment from 56 percent to 100 percent. The Canada bar has a Tenth Grade segment from 0 percent to 74 percent, and an Eleventh Grade segment from 74 percent to 100 percent. The Haiti bar has a Tenth Grade segment from 0 percent to 44 percent, and an Eleventh Grade segment from 44 percent to 100 percent.
D
Image with description A segmented bar graph titled Student Interest in Country by Grade. The vertical axis is labeled from 0 percent to 100 percent in increments of 20 percent, with grid lines every 10 percent. The horizontal axis has three categories labeled Tenth Grade, Eleventh Grade, and Total. A legend below indicates the segments represent Belgium, Canada, and Haiti from bottom to top. Each category shows a stacked bar reaching 100 percent. The Tenth Grade bar has a Belgium segment from 0 percent to 33 percent, a Canada segment from 33 percent to 75 percent, and a Haiti segment from 75 percent to 100 percent. The Eleventh Grade bar has a Belgium segment from 0 percent to 35 percent, a Canada segment from 35 percent to 55 percent, and a Haiti segment from 55 percent to 100 percent. The Total bar has a Belgium segment from 0 percent to 33 percent, a Canada segment from 33 percent to 73 percent, and a Haiti segment from 73 percent to 100 percent.
11

A school administrator asks each student if they participate in a sport and if they participate in a club. The results are shown. Participates in a Sport Yes No Total Participates in a Club Yes 620 450 1070 No 325 535 860 Total 945 985 1930 What percentage of students do not participate in a sport? Round the answer to four decimal places.

A
27 point 7 percent
B
62 point 2 percent
C
44 point 6 percent
D
51 point 0 percent
12

A student collected data on the size of coffee chosen by customers at a convenience store, and whether the customers took their coffee with sugar, cream, or both. Size of Coffee Small Medium Large Total Coffee Additive Cream 8 15 21 44 Sugar 4 8 11 23 Both 15 23 42 80 Total 27 46 74 147 What percentage of customers chose a medium-sized coffee? Round the answer to four decimal places.

A
31 point 3 percent
B
62 point 1 percent
C
50 point 3 percent
D
32 point 6 percent
13

The five-number summary of a data set is given. Minimum: 3 cap q sub 1 : 12 Median: 15 cap q sub 3 : 16 Maximum: 20 Which of the following is a true statement about outliers for this distribution?

A
There are no outliers for this distribution.
B
Distribution outliers cannot be determined.
C
The distribution’s minimum is an outlier.
D
The distribution’s maximum is an outlier.
14

A simple random sample of 10 people were asked how many first cousins they have. The results are listed. 10 , 19 , 20 , 13 , 13 , 2 , 10 , 8 , 25 , 10 What is the mean number of first cousins for this sample?

A
13 point 5
B
13
C
10
D
11 point 5
15

What is the shape of the distribution of bag weight?

A
uniform
B
skewed right
C
roughly symmetric
D
skewed left
16

Which of the following is a true statement based on the histogram?

A
There were no lap times between 35 and 36 seconds.
B
There were three laps with times greater than 38 seconds.
C
The interval from 37 to 38 seconds saw the most lap times.
D
There were six laps with times less than 37 seconds.
17

Which of the following is the correct five-number summary?

A
22 , 24 , 27 , 28 , 30
B
23 , 24 point 5 , 26 , 28 , 29
C
22 , 24 , 26 , 28 , 29
D
22 , 24 point 5 , 26 , 28 , 30
18

Which letter represents the approximate location of the mean number of math classes?

A
A
B
B
C
C
D
D

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