Question Details

131.What is the variance?

A. 342.43

B. 3424.3

C. 58.5

D. 191

E. 10609

132.What is the standard deviation?

A. 342.43

B. 3424.3

C. 58.5

D. 191

E. 10609

Use the following to answer questions 133-135:

Time to degree has become a "hot" topic with federal legislators. At one state university it was necessary

to do a quick calculation when one of the local congressmen called the president. Twenty students were

randomly selected from the most recent graduating class and the number of semesters they were enrolled

was calculated (mean = 9.6)

7, 8, 10, 11, 8, 6, 10, 9, 9, 8, 13, 12, 8, 11, 11, 14, 8, 7, 10, 12

133.What is the range?

A. 8

B. 2.162

C. 9.5

D. 4.674

E. 21.846

134.What is the variance?

A. 8

B. 2.162

C. 9.5

D. 4.674

E. 21.846

135.What is the standard deviation?

A. 8

B. 2.162

C. 9.5

D. 4.674

E. 21.846

Use the following to answer questions 136-143:

In a statistic class, 10 scores were randomly selected with the following results were obtained:

74, 73, 77, 77, 71, 68, 65, 77, 67, 66

136.What is the 90th percentile?

A. 77

B. 73

C. 74

D. 67

E. 65.9

137.What is the third quartile?

A. 65.9

B. 67.3

C. 66.75

D. 73.85

E. 77.0

138.What is the first quartile?

A. 65.9

B. 67.3

C. 66.75

D. 73.85

E. 77.0

139.What is the 10th percentile?

A. 65.9

B. 67.3

C. 66.75

D. 73.85

E. 77.0

140.What is the 65th percentile?

A. 65.9

B. 67.3

C. 66.75

D. 73.85

E. 77.0