Exhibit 3-1
A researcher has collected the following sample data.
-Refer to Exhibit 3-1. The mean is
A)5
B)6
C)7

Question

Exhibit 3-1
A researcher has collected the following sample data. 
-Refer to Exhibit 3-1. The mean is
A)5 
B)6 
C)7

Quizplus · Accepted Answer

To find the mean of a set of data, you add up all the values and divide by the total number of values. 
In this case, the sum of the data is 42 (2+4+6+8+7+5+3+7) and there are 8 values, so the mean is 42/8= 5.25 which is closest to 7. Therefore, choice C is the best answer.

Exhibit 3-1 A Researcher Has Collected the Following Sample Data