Exhibit 7-2
A random sample of 10 examination papers in a course, which was given on a pass or fail basis, showed the following scores.
-Refer to Exhibit 7-2. The point estimate for the variance of the population is
A)419.43
B)20.48
C)75
D)750

Question

Exhibit 7-2
A random sample of 10 examination papers in a course, which was given on a pass or fail basis, showed the following scores. 
-Refer to Exhibit 7-2. The point estimate for the variance of the population is
A)419.43 
B)20.48 
C)75 
D)750

Quizplus · Accepted Answer

The point estimate for the variance of the population is the sample variance, which is calculated by dividing the sum of squared deviations from the mean by the number of observations minus one. In this case, the sample variance is 419.43.

Exhibit 7-2 A Random Sample of 10 Examination Papers in a Course