Geometric and Weighted mean

Question 1

Geometric mean formula

Answer 1

n√EX
For example: 23 24 43 56 12 45
Geometric mean= 6√203=29.9225

Question 2

Weighted mean formula

Answer 2

x*grade %
for example: 40% 40% 20% and 60 45 70
60 x 0.4=15
45x0.4=18
70x0.2=14
So 47/(0.4+0.4+0.2)=47