Question

Suppose your statistics instructor gave six examinations during the semester. You received the following grades (percent correct): 92, 70, 84, 87, 90, and 75.To compute your final course grade, the instructor decided to randomly select two exam scores, compute their mean, and use this score to dtermine your final course grade.

Answer 1

Average of final course grade is 83.

Explanation:

Given : Suppose your statistics instructor gave six examinations during the semester. You received the following grades (percent correct):

92, 70, 84, 87, 90, and 75.

To find : Compute their mean, and use this score to determine your final course grade ?

Solution :

Mean is defined as the total data divide by number of data.

`M=(\sum x_n)/(n)`

`M=(92+70+84+87+90+75)/(6)`

`M=(498)/(6)`

`M=83`

Therefore, Average of final course grade is 83.