AnswersFoundations of Math 1Data Distributions and Analysis

Data Distributions and Analysis — Test Answers

23 verified answers
1
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Which statement best describes Rosa’s first error?

A
She should have added the elements and divided by 9.
B
She should have reordered the elements from least to greatest.
C
She should have counted repeated elements only once.
D
She should have found the difference between the first and last elements.
2
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Which statement best describes the data?

A
The lengths of Gajge’s runs have greater variability because there is a greater difference between his longest and shortest runs.
B
The lengths of Ty’s runs have greater variability because Ty had more rushing attempts.
C
Ty’s and Gajge’s runs have the same variability because they both average 4 point 0 yards per carry.
D
Ty’s and Gajge’s runs have the same variability because they both had the same length shortest run.
3

Which is an example of a statistical question?

A
question 3
B
question 1
C
question 2
D
question 4
4

Which statement most reasonably explains the hours when zero calls were received?

A
Medera lost her phone for two hours.
B
Medera’s phone can only receive 22 calls a day.
C
Medera only receives calls in clusters.
D
Medera turned the phone off while playing in a soccer game.
5

Raj polled 100 students in his class to compare the number of hours that teen boys and girls played video games each week. The results of his survey are shown here. Which gender shows greater variability in their playing time?

A
Boys show greater variability because the 3 rd quartile for boys is 17 but only 15 for girls.
B
Boys show greater variability because the median playing time for boys is 14 point 5 but only 6 for girls.
C
Girls show greater variability because the data for the girls is skewed toward the lower end of the box plot.
D
Girls show greater variability because the interquartile range for girls is 12 for girls but only 8 for boys.
6

Question text not available

A
Image with description A two-column table has headings Pull-ups Completed in One Minute and Tally. One pull-up completed has 2 tally marks. Two pull-ups completed has 5 tally marks. Three pull-ups completed has 3 tally marks. One tally mark completed has 1 tally mark. Two tally marks completed has 2 tally marks. Under the table, a dot plot is titled Pull-ups Completed in One Minute. The number line goes from 0 to 6 by ones. There are two dots above 1. There are two dots above 2. There are three dots above 3. There is one dot above 4. There are two dots above 5.
B
Image with description A two-column table has headings Pull-ups Completed in One Minute and Tally. One pull-up completed has 2 tally marks. Two pull-ups completed has 5 tally marks. Three pull-ups completed has 3 tally marks. One tally mark completed has 1 tally mark. Two tally marks completed has 2 tally marks. Under the table, a dot plot is titled Pull-ups Completed in One Minute. The number line goes from 0 to 6 by ones. There are two dots above 1. There are five dots above 2. There are three dots above 3. There is one dot above 4. There are two dots above 5.
C
Image with description A two-column table has headings Pull-ups Completed in One Minute and Tally. One pull-up completed has 2 tally marks. Two pull-ups completed has 5 tally marks. Three pull-ups completed has 3 tally marks. One tally mark completed has 1 tally mark. Two tally marks completed has 2 tally marks. Under the table, a dot plot is titled Pull-ups Completed in One Minute. The number line goes from 0 to 5 by ones. There are two dots above 1. There are five dots above 2. There are three dots above 3. There is one dot above 4.
D
Image with description A two-column table has headings Pull-ups Completed in One Minute and Tally. One pull-up completed has 2 tally marks. Two pull-ups completed has 5 tally marks. Three pull-ups completed has 3 tally marks. One tally mark completed has 1 tally mark. Two tally marks completed has 2 tally marks. Under the table, a dot plot is titled Pull-ups Completed in One Minute. The number line goes from 0 to 6 by ones. There are two dots above 1. There are five dots above 2. There are three dots above 3. There is one dot above 4. There is one dot above 5.
7

Where is the gap in the data?

A
0
B
2
C
4
D
8
8

What is the mean salary of a salesperson at the company?

A
58 dollars comma 000
B
53 dollars comma 000
C
38 dollars comma 000
D
56 dollars comma 000
9

What is the mean of the data set? 17, 24, 26, 13

A
80
B
20
C
13
D
4
10

What is the range for this set of data? 7, 15, 12

A
8
B
3
C
12
D
5
11

What is the mean of the data set? 85, 97, 84, 88, 95, 100, 81

A
83
B
90
C
19
D
88
12

What percentage of the data values falls between the values of 3 and 24 in the data set shown? Expand Image

A
100 percent
B
75 percent
C
50 percent
D
25 percent
13

Swati recorded this data set, which contains an outlier. 163, 97, 184, 199, 169, 175 What numbers represent the lower and upper quartiles?

A
lower quartile: 172 upper quartile: 184
B
lower quartile: 163 upper quartile: 172
C
lower quartile: 184 upper quartile: 163
D
lower quartile: 163 upper quartile: 184
14

Which set of data does not contain any outliers?

A
141, 151, 111, 142, 149, 140, 150
B
131, 135, 131, 99, 138, 136, 140
C
113, 115, 103, 154, 109, 111, 119
D
99, 103, 91, 104, 109, 107, 97
15

Leo wants to determine the average number of texts middle school students send in a day. Since all middle school students are enrolled in history, he randomly surveyed 4 students from each of Mr. Barnes’s eighth-grade history classes. Ms. Lopez and Mrs. Frank also teach eighth-grade history. What should Leo do to ensure his sample is representative of all middle school students?

A
He should survey all the students in all the history classes to make sure he collects enough data.
B
He should take the sample as is because he randomly surveyed students in each of Mr. Barnes’s classes.
C
He should also take a sample from each of the other history classes in all of the other grades in the middle school.
D
He should also take a sample from Ms. Lopez’s and Mrs. Frank’s classes so that each student has the same chance of being chosen.
16

What is the median of this set of data? 1, 2, 5, 6, 9

A
8
B
9
C
1
D
5
17

Nicole received the following scores on her last 10 math assignments. 100, 88, 76, 78, 92, 94, 84, 98, 82, 90 What is the Nicole’s median score?

A
89
B
88
C
24
D
93
18

For a school newspaper article, Cienna conducted a survey to find out students’ favorite subjects. She polled all the students in Mrs. Lopez’s advanced dance class. Why is her data likely to be skewed?

A
Advanced dance students are more likely to enjoy dance than students in the general population, so dance will be underrepresented.
B
Cienna should have interviewed only every other student in the class to avoid having too many people.
C
Cienna should have interviewed all the students in the school to get more accurate data.
D
Advanced dance students are more likely to enjoy dance than students in the general population, so dance may be overrepresented.
19

What percentage of the data values represented on a box plot falls between the lower quartile and the upper quartile?

A
75 percent
B
33 1 third percent
C
50 percent
D
25 percent
20

What is the upper and lower quartile of this set of data? 15, 19, 20, 25, 31, 38, 41

A
lower quartile: 25 upper quartile: 38
B
lower quartile: 19 upper quartile: 25
C
lower quartile: 19 upper quartile: 38
D
lower quartile: 15 upper quartile: 41

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