Describing and Comparing Data with Histograms Answers

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1
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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 is NOT true?

Question illustration
A
Both distributions are skewed to the right.
B
There appear to be outliers in both distributions.
C
The proportion of students who grabbed more than 20 snacks is higher in Class A than in Class B.
D
The proportion of students who grabbed fewer than 25 snacks is higher in Class A than in Class B.
3

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.
6

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
8

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.
10

The dotplot below displays the difference in scores for 18 games between a high school soccer team and its opponent.

Question illustration
A
In one game, the team beat the opponent by 1 goal.
B
In two games, the team beat the opponent by 1 goal.
C
In one game, the team lost to the opponent by 1 goal.
D
In two games, the team lost to the opponent by 1 goal.

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