Describing and Comparing Data with Dotplots and Stemplots

Question 1

The side-by-side stemplot below displays the arm spans, in centimeters, for two classes.

Revolt · Accepted Answer

The arm spans for Class A have less variability than the arm spans for Class B.

Question 2

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?

Revolt · Accepted Answer

The number of snacks grabbed for Class A has less variability than the number of snacks grabbed for Class B.

Question 3

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

Revolt · Accepted Answer

The distribution of math classes is unimodal symmetric with a center around 4 classes.

Question 4

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?

Revolt · Accepted Answer

The median score for Class A is lower than Class B’s.

Question 5

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.

Revolt · Accepted Answer

Yes, this is an accurate display of the data.

Question 6

The stemplot below displays the arm spans, in centimeters, for 44 students.

Revolt · Accepted Answer

45%

Question 7

The side-by-side stemplot below displays the arm spans, in centimeters, for two classes.

Revolt · Accepted Answer

The proportion of arm spans that are longer than 170 cm is higher in Class A than in Class B.

Question 8

The stemplot below represents the number of bite-size snacks grabbed by 32 students in an activity for a statistics class.

Revolt · Accepted Answer

84%

Question 9

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

Revolt · Accepted Answer

72%

Question 10

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

Revolt · Accepted Answer

D

Describing and Comparing Data with Dotplots and Stemplots Answers

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