There are five rows of students seated in a marketing class. The following table shows the number of students in each row and the average score of the most recent test for that row. (See the Excel Data File.) What is the average test score for this class?
A) 84.7
B) 85.7
C) 83.0
D) 86.8

Question

There are five rows of students seated in a marketing class. The following table shows the number of students in each row and the average score of the most recent test for that row.  (See the Excel Data File.) What is the average test score for this class?
A) 84.7 
B) 85.7 
C) 83.0 
D) 86.8

Quizplus · Accepted Answer

To find the average test score for the class, we need to take the sum of all the test scores and divide by the total number of students. Using the data provided in the table, we can calculate the total number of students as (24+25+22+20+19) = 110, and the total score as (24*85 + 25*87 + 22*81 + 20*90 + 19*83) = 9336. Dividing the total score by the total number of students, we get an average test score of 85.7, which is option B.

There Are Five Rows of Students Seated in a Marketing