Question

80 is the mean of which if the following sets of test scores?
A. {86, 77, 92, 69, 86, 91, 68}
B. {85, 76, 91, 68, 84, 89, 67}
C .{98, 79, 85, 81, 89, 78, 92}
D. {89, 68, 92, 88, 81, 90, 100}
E. {75, 98, 86, 83, 88, 94, 99}

Answer 1

Add up all the test scores for each answer, and find out which one has the average of 80