The test scores of the students in four classes are summarized below. Answer the questions about them.

Question

Class A: The range of scores is
44
and the mean score is
108
.
Class B: The range of scores is
42
and the mean score is
111
.
Class C: The range of scores is
36
and the mean score is
102
.
Class D: The range of scores is
43
and the mean score is
105
.
(a) Based on the information above, which class has the highest scores on average?

Class A
Class B
Class C
Class D
(b) Based on the information above, which class's scores have the most variability?

Class A
Class B
Class C
Class D

Answer 1

(a) Based on the information above, Class B has the highest scores on average with a mean score of 111.
(b) Based on the information above, Class A has the most variability with a range of scores of 44.

Answer 2

The ages of the members of four teams are summarized below. Answer the questions about them.
Team A: The range of ages is
26
and the mean age is
45
.
Team B: The range of ages is
23
and the mean age is
44
.
Team C: The range of ages is
29
and the mean age is
43
.
Team D: The range of ages is
31
and the mean age is
42
.
(a) Based on the information above, which team's ages have the least variability?

Team A
Team B
Team C
Team D
(b) Based on the information above, which team has the youngest members on average?

Team A
Team B
Team C
Team D

Answer 3

(a) Based on the information above, Team B has the least variability with a range of ages of 23.
(b) Based on the information above, Team D has the youngest members on average with a mean age of 42.