If the median of a data set is 760 and the upper quartile is 950, and the lower quartile is

650, what is the interquartile range?

A. 300

B. 190

C. 110

D. 150

E. 910

Given a set of data with a mean of 150 and a standard deviation of 20. Using Chebyshev's

Theorem, what is the minimum percentage of data between 110 and 190?

A. 95.44%

B. 93.75%

C. 68.26%

D. 75.00%

E. 98.75%

Compute the population variance of the data:

16,18,23,21,17,16,24,23,9,17,11,16,22,10,15,14.

A. 21.9

B. 3.87

C. 20.5

D. 17.0

E. 3.625