Unit Test — Unit test Answers

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1
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What is the median of this set of data? 362, 187, 211, 298, 331, 250, 347, 199

Answer not available
2
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Which data display shows the number of observations? Check all that apply.

A
A bar graph titled Sibling Survey has number of siblings on the y-axis and number of students on the y-axis. 4 students have 0 siblings; 9 have 1; 5 have 2; 3 have 3; 2 have 4; 0 have 5; 1 has 6; 1 has 7.
Option A
B
A pie chart titled Sibling Survey. 1 sibling is the largest piece, then 2 siblings, then 0 siblings, followed by 3, 4, 6, and 7.
Option B
C
A bar graph titled Sibling Survey has number of siblings on the y-axis and number of students on the y-axis. 13 students have 0 to 1 sibling; 8 have 2 to 3; 2 have 4 to 5; 2 have 6 to 7.
Option C
D
A box-and-whisker plot. The number line goes from 0 to 8. The whiskers range from 0 to 7, and the box ranges from 1 to 3.
Option D
E
A dot plot goes from 0 to 7. 0 has 4 dots, 1 has 9 dots, 2 has 5 dots, 3 has 3 dots, 4 has 2 dots, 5 has 0 dots, 6 has 1 dot, and 7 has 1 dot.
Option E
3

A weekly report for new agents at a vacation sales company is shown in the histogram.How many of the new agents sold more than 10 vacation packages?

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Answer not available
4

Two students were asked if they liked to read. Is this a good example of a statistical question? Why or why not?

A
Yes, this is a good statistical question because a variety of answers are given.
B
Yes, this is a good statistical question because there are not a variety of answers that could be given.
C
No, this is not a good statistical question because there are not a variety of answers that could be given.
D
No, this is not a good statistical question because there are a variety of answers that could be given.
5

Maria made a histogram to represent her jogging miles.The height of the bars in the histogram represent

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A
the number of runs Maria jogged in each range of miles.
B
the number of marathons Maria entered.
C
the number of days Maria jogged that week.
D
the number of weeks Maria jogged.
6

The number of boxes of food that six volunteers collected for the food drive is given in the table below.Number of Boxes323520162813What is the mean absolute deviation? Round to the nearest tenth.

Answer not available
8

Lydia collected two sets of data.Set 1Set 217811380189451782195One set of data shows an outlier. Which set has an outlier, and which number is the outlier?

A
Set 1 contains an outlier. The outlier is 51.
B
Set 1 contains an outlier. The outlier is 13.
C
Set 2 contains an outlier. The outlier is 78.
D
Set 2 contains an outlier. The outlier is 95.
11

Mrs. Barnes recorded the grades her students earned on the last chapter test in the frequency table below.The frequency table will be used to make a histogram. Test ScoreNumber of Students31 - 40141 - 50251 - 60461 - 70671 - 801181 - 90591 - 1004Which chart has the correct setup for Mrs. Barnes’ histogram?

A
A 2-column table with 4 rows titled Mrs. Barnes's Histogram. Column 1 has entries interval used, appropriate scale, vertical axis represents, horizontal axis represents. Column 2 has entries 10, 31 to 100, number of students, test scores.
Option A
B
A 2-column table with 4 rows titled Mrs. Barnes's Histogram. Column 1 has entries interval used, appropriate scale, vertical axis represents, horizontal axis represents. Column 2 has entries 10, 0 to 12, number of students, test scores.
Option B
C
A 2-column table with 4 rows titled Mrs. Barnes's Histogram. Column 1 has entries interval used, appropriate scale, vertical axis represents, horizontal axis represents. Column 2 has entries 7, 0 to 12, test scores, number of students.
Option C
D
A 2-column table with 4 rows titled Mrs. Barnes's Histogram. Column 1 has entries interval used, appropriate scale, vertical axis represents, horizontal axis represents. Column 2 has entries 7, 31 to 100, test scores, number of students.
Option D
12

Ten people reported the number of hours they worked last week.17, 42, 40, 35, 24, 20, 30, 32, 25, 38What is the median, lower quartile, upper quartile, and interquartile range of this set of data?

A
median: 31lower quartile: 24upper quartile: 38interquartile range: 14
B
median: 22lower quartile: 40upper quartile: 32interquartile range: 8
C
median: 31lower quartile: 24upper quartile: 38interquartile range: 7
D
median: 32lower quartile: 24upper quartile: 38interquartile range: 14
13

Use the data on the dot plot to answer the question. How many people read for more than three hours last week?

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Answer not available
14

Which dot plot is symmetric?

A
Number of Correct Answers on the Quiz
Option A
B
Number of Correct Answers on the Quiz
Option B
C
Number of Correct Answers on the Quiz
Option C
D
Number of Correct Answers on the Quiz
Option D
15

Which descriptions of a histogram are true? Check all that apply..

A
A peak is a bar that is lower than the other bars around it.
B
A peak is where the frequency is lowest.
C
A peak is where the frequency is the highest.
D
A cluster is a group of bars, meaning the frequency is higher in these intervals.
E
A peak is a bar that is higher than the other bars around it.
F
Intervals on a histogram where there are no bars mean the frequency is 0.
G
If the graph is symmetrical, the data is clustered toward the right side.
H
If the graph is symmetrical, the data is evenly distributed.

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