Exhibit 5-7
A sample of 2,500 people was asked how many cups of coffee they drink in the morning. You are given the following sample information.
-Refer to Exhibit 5-7. The variance of the number of cups of coffee is
A).96
B).9798
C)1
D)2.4

Question

Exhibit 5-7
A sample of 2,500 people was asked how many cups of coffee they drink in the morning. You are given the following sample information. 
-Refer to Exhibit 5-7. The variance of the number of cups of coffee is
A).96 
B).9798 
C)1 
D)2.4

Quizplus · Accepted Answer

The variance is the square of the standard deviation, which is 0.98. So the variance is 0.98^2 = 0.96.

Exhibit 5-7 A Sample of 2,500 People Was Asked How Many Cups