AnswersMathematics for College Liberal Arts Sem 1 1207350 BCPS 2025-26Describing and Comparing Data with Dotplots and Stemplots

Describing and Comparing Data with Dotplots and Stemplots Answers

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1
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The stemplot displays 26 students’ scores on a 90-point statistics test.

Question illustration
A
bimodal and symmetric
B
slightly skewed left
C
slightly skewed right
D
heavily skewed right
3

The arm spans were measured, in centimeters, for 12 students. The results are shown below.148, 151, 154, 155, 160, 161, 162, 162, 167, 170, 171, 180A student used the data to create this stemplot.

Question illustration
A
No, the stems should not be split.
B
No, there should be another stem of 17.
C
Yes, this is an accurate display of the data.
D
No, there should be another stem of 17 and another stem of 18.
4

The dotplot below displays the number of math classes taken by a random sample of students at a high school.

Question illustration
A
The distribution of math classes is skewed left with a center around 4 classes.
B
The distribution of math classes is skewed left with a center between 3 and 4 classes.
C
The distribution of math classes is unimodal symmetric with a center around 4 classes.
D
The distribution of math classes is unimodal symmetric with a center between 3 and 4 classes.
6

The dotplots below display the scores for two classes on a 30-point statistics quiz. Class A has 26 students and Class B has 25 students.Which statement best compares the scores for Class A to Class B?

Question illustration
A
The median score for Class A is lower than Class B’s.
B
The median score for Class B is lower than Class A’s.
C
The median score for Class A is higher than Class B’s.
D
The median score for Class B is about the same as Class A’s.
7

The dotplots below display the number of bite-size snacks that students in two statistic classes grabbed with one hand. Class A has 32 students and Class B has 34 students.Which statement best compares the variability of the number of snacks grabbed for Class A and Class B?

Question illustration
A
The number of snacks grabbed for Class A has less variability than the number of snacks grabbed for Class B.
B
The number of snacks grabbed for Class B has less variability than the number of snacks grabbed for Class A.
C
The number of snacks grabbed for Class A has more variability than the number of snacks grabbed for Class B.
D
The number of snacks grabbed for Class B has about the same variability as the number of snacks grabbed for Class A.
8

The dotplots below display the number of bite-size snacks that students in two statistic classes grabbed with one hand. Class A has 32 students and Class B has 34 students.Which statement best compares the variability of the number of snacks grabbed for Class A and Class B?

Question illustration
A
The number of snacks grabbed for Class A has less variability than the number of snacks grabbed for Class B.
B
The number of snacks grabbed for Class B has less variability than the number of snacks grabbed for Class A.
C
The number of snacks grabbed for Class A has more variability than the number of snacks grabbed for Class B.
D
The number of snacks grabbed for Class B has about the same variability as the number of snacks grabbed for Class A.
9

The stemplot below represents the number of bite-size snacks grabbed by 10 students in an activity for a statistics class.

Question illustration
A
15, 16, 17, 19, 20, 21, 23, 32, 42
B
15, 16, 16, 17, 19, 21, 23, 32, 42
C
15, 16, 16, 17, 19, 20, 21, 23, 32, 42
D
15, 15, 16, 17, 19, 20, 21, 23, 32, 42

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