A college conducted a survey of students satisfaction with three academic courses: mathematics, English, and science. The results are tabulated in the data matrix below. How many surveys were completed?
A) 9
B) 48
C) 18
D) 10
E) 20

Question

A college conducted a survey of students satisfaction with three academic courses: mathematics, English, and science. The results are tabulated in the data matrix below. How many surveys were completed? 
A) 9 
B) 48 
C) 18 
D) 10 
E) 20

Quizplus · Accepted Answer

The data matrix has 3 rows (corresponding to the 3 courses) and 16 columns (corresponding to the possible responses from students). The sum of all the entries in the matrix is 48, which represents the total number of surveys completed. Therefore, the correct answer is B.

A College Conducted a Survey of Students Satisfaction with Three