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Unit Test — Unit test Answers

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The data set represents the total number of people who bought bananas each hour at a grocery store.1, 1, 5, 5, 7, 8, 8, 10, 12Which box plot correctly represents the data?

A
A number line goes from 0 to 16. The whiskers range from 1 to 12, and the box ranges from 3 to 9. A line divides the box at 7.
Option A
B
A number line goes from 0 to 16. The whiskers range from 1 to 12, and the box ranges from 5 to 9. A line divides the box at 7.
Option B
C
A number line goes from 0 to 16. The whiskers range from 1 to 12, and the box ranges from 5 to 8. A line divides the box at 7.
Option C
D
A number line goes from 0 to 16. The whiskers range from 1 to 12, and the box ranges from 3 to 8. A line divides the box at 7.
Option D
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The data set represents the total number of tickets each person purchased for a play.0, 0, 1, 1, 1, 2, 2, 2, 4, 4What is the median of the data?

A
1
B
1.5
C
2
D
2.5
63

The dot plots below show rainfall totals in the Highlands and Lowlands areas of a certain region.When comparing the two sets of data, which is a true statement?

Question illustration
A
There are gaps in both sets of data.
B
The ranges are the same.
C
The two sets of data do not overlap.
D
The rainfall peaks at a lower value in the Lowlands.
64

Mrs. Juarez graded ten English papers and recorded the scores.92, 95, 100, 62, 88, 90, 100, 96, 89, 98Which statements are true? Check all that apply.

A
The range of scores is 38.
B
Without the outlier, the range of scores would be 12.
C
The outlier impacts the range more than it impacts the interquartile range.
D
The interquartile range is 9.
E
The interquartile range is 4.
F
Without the outlier, the interquartile range would be 9.5.
65

Four students found the mean of the data set 26, 31, 39, 30, 16, 16, 18, 38. Which student found the correct mean?

A
Ashrita’s work:
Option A
B
Collette’s work:
Option B
C
Daniel’s work:
Option C
D
Lora’s work:
Option D
66

The histogram represents the number of boxes of colored pencils ordered by classrooms.Which interval includes the outlier?

Question illustration
A
25–29 boxes
B
30–34 boxes
C
45–49 boxes
D
55–59 boxes
67

Maria scored 72, 97, and 82 on her first three math tests. She wants to have a mean score of 82 for the quarter. How many points does she need on her last test to earn an 82 for the quarter?

A
62.75
B
77
C
82
D
83.25
68

Martin kept track of the number of times he had to flip a coin before it landed tails up.Number of Flips to Land Tails UpWhich is a true statement about the dot plot?

Question illustration
A
Six times it took 4 flips of the coin to land tails up.
B
Twice it took 4 flips of the coin to land tails up.
C
It took 6 flips of the coin to land tails up more often than any other number of flips.
D
The greatest number of flips it took to land tails up was 6.
69

Which data set is the most clustered around its mean?

A
10, 30, 40, 20
B
12, 14, 36, 38
C
8, 42, 30, 30
D
30, 25, 15, 30
70

Which letter represents the maximum of the data set on the box plot?

Question illustration
A
B
B
C
C
D
D
E
71

What can be concluded about the spread of the histogram?

Question illustration
A
The left side of the histogram is the mirror image of the right side.
B
The histogram is not symmetrical.
C
The histogram is evenly distributed.
D
The left side of the histogram has a cluster.
72

Which statement about a histogram is true?

A
A cluster means the frequency is zero.
B
If the graph has a cluster, the data is evenly distributed.
C
A mirror image of the left and right side of a histogram means there is a peak in the middle.
D
A peak is a bar that is higher than the other bars around it.
73

A data set has a maximum of 200, a minimum of 115, a median of 145, an upper quartile of 150, and a lower quartile of 120. Which statement is true of the box plot of this data set?

A
The box will go from 145 to 150.
B
A line dividing the box will be at 135.
C
The left whisker will go from 115 to 145.
D
The right whisker will go from 150 to 200.
74

Which statements are true about the median of a data set? Check all that apply.

A
The median isn’t affected much by one outlier.
B
The median is always affected by one outlier.
C
The median is the number in the middle on an ordered set of data.
D
To find the median, find the difference between the highest and lowest numbers.
E
To find the median of an even data set, find the average of the two middle numbers.

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