The test scores of the students in four classes are summarized below. Answer the questions about them.
Class A: The mean score is
92
and the range of scores is
36
.
Class B: The mean score is
95
and the range of scores is
37
.
Class C: The mean score is
98
and the range of scores is
29
.
Class D: The mean score is
100
and the range of scores is
33
.
(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
(a) The class with the highest scores on average is Class D, with a mean score of 100.
(b) The class with the most variability in scores is Class B, with a range of 37.
The ages of the members of four teams are summarized below. Answer the questions about them.
Team A: The range of ages is
11
and the mean age is
42
.
Team B: The range of ages is
13
and the mean age is
46
.
Team C: The range of ages is
18
and the mean age is
39
.
Team D: The range of ages is
20
and the mean age is
40
.
(a) Based on the information above, which team has the oldest members on average?
Team A
Team B
Team C
Team D
(b) Based on the information above, which team's ages have the least variability?
Team A
Team B
Team C
Team D
(a) Based on the information above, Team B has the oldest members on average, with a mean age of 46.
(b) Based on the information above, Team C has the ages with the least variability, as it has the smallest range of ages at 18.
The salaries of the employees at four companies are summarized below. Answer the questions about them.
Company A: The range of salaries is
$54,000
and the mean salary is
$36,000
.
Company B: The range of salaries is
$55,000
and the mean salary is
$43,000
.
Company C: The range of salaries is
$63,000
and the mean salary is
$34,000
.
Company D: The range of salaries is
$56,000
and the mean salary is
$38,000
.
(a) Based on the information above, which company's salaries have the least variability?
Company A
Company B
Company C
Company D
(b) Based on the information above, which company has the lowest salaries on average?
Company A
Company B
Company C
Company D
(a) Based on the information above, Company C has the salaries with the least variability, as it has the smallest range of salaries at $63,000.
(b) Based on the information above, Company C has the lowest salaries on average, with a mean salary of $34,000.
The test scores of the students in four classes are summarized below. Answer the questions about them.
Class A: The mean score is
113
and the range of scores is
31
.
Class B: The mean score is
119
and the range of scores is
30
.
Class C: The mean score is
110
and the range of scores is
26
.
Class D: The mean score is
114
and the range of scores is
25
.
(a) Based on the information above, which class has the lowest 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
(a) Based on the information above, Class C has the lowest scores on average, with a mean score of 110.
(b) Based on the information above, Class B has the scores with the most variability, as it has the largest range of scores at 30.