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. Of the students who were surveyed regarding math, what proportion rated math as excellent?
A) 7
B) 0.41
C) 2.57
D) 0.39
E) 18

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. Of the students who were surveyed regarding math, what proportion rated math as excellent? 
A) 7 
B) 0.41 
C) 2.57 
D) 0.39 
E) 18

Quizplus · Accepted Answer

The proportion of students who rated math as excellent is equal to the number of students who rated math as excellent divided by the total number of students who were surveyed regarding math. From the data matrix, we see that the number of students who rated math as excellent is 19. The total number of students who were surveyed regarding math is 49. Therefore, the proportion of students who rated math as excellent is 19/49, which is approximately 0.39. Therefore, the best choice is D.

A College Conducted a Survey of Students Satisfaction with Three