Michael gets test grades of 73, 79, 80, and 85. He gets a 83 on her final exam. Find the weighted mean if the tests each count for 15% and the final exam counts for 40% of the final grade. Round to one decimal place.
A) 239.3
B) 80.0
C) -77.7
D) 80.8

Question

Quizplus · Accepted Answer

The weighted mean is calculated by multiplying each test score by its weight, summing these products, and then dividing by the total weight. Here, (73*0.15 + 79*0.15 + 80*0.15 + 85*0.15 + 83*0.40) = 80.8.

Michael Gets Test Grades of 73, 79, 80, and 85