To calculate the weighted arithmetic mean mark, we need to multiply each mark by its respective weight, sum up the results, and divide by the total weight.
Weighted arithmetic mean = (Finance mark * Finance weight + Statistics mark * Statistics weight + Accounting mark * Accounting weight + Marketing mark * Marketing weight + English mark * English weight) / (Finance weight + Statistics weight + Accounting weight + Marketing weight + English weight)
Plugging in the values:
Weighted arithmetic mean = (74*5 + 82*4 + 79*3 + 76*2 + 76*1) / (5 + 4 + 3 + 2 + 1)
= (370 + 328 + 237 + 152 + 76) / 15
= 1163 / 15
= 77.53
Therefore, the weighted arithmetic mean mark for all five subjects is 77.53.
A student's marks and their respective weight in five subjects are given below:
Subject Mark Weight
Finance 74 5
Statistics 82 4
Accounting 79 3
Marketing 76 2
English 76 1
What is the weighted arithmetic mean mark for all five subjects?
1 answer