Find the weighted mean for three exams if the first one was worth 20% and the st

Question

Find the weighted mean for three exams if the first one was worth 20% and the student received a 96, the second was worth 50 % and the student received a 84 and the third was worth 30 % and the student received an 73.
Find the weighted mean for three exams if the first one was worth 20% and the student received a 96, the second was worth 50 % and the student received a 84 and the third was worth 30 % and the student received an 73.
Find the weighted mean for three exams if the first one was worth 20% and the student received a 96, the second was worth 50 % and the student received a 84 and the third was worth 30 % and the student received an 73.

Explanation / Answer

We know that

Weighted mean = wx/w

Where w = the weights and x = the values

So, from the given date

The weighted mean = (0.20*96 + 0.50*84 + 0.30*73)/(0.20+0.50+0.30) = 83.1/1 = 83.1

The weighted mean = 83.1

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