1. A student gets the following grades in his 5 subjects: 87 for calculus; 82 for Physics; 79 for chemistry; 81 for English; and 83 for History. Compute the weighted mean if the weights for 5 subjects are 5,4,4,3 and 3 respectively.

Answer 1

(5 * 87) + (4 * 82) + (4 * 79) +(3 * 81) +(3 * 83) = x

weighted mean = x / (5 + 4 + 4 + 3 + 3)