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Mean of n-observations x1,x2,…………….,xn r...

Mean of n-observations `x_1,x_2`,…………….,`x_n` repeated `f_1, f_2, f_3`…………….`f_n` times if……….

A

`frac(overset(n)underset(i = 1)Sigma f_i x_i)(overset(n)underset(i =1)Sigma f_i)`

B

`frac (f_ix_i)(x_i)`

C

`frac(f_i)[overset(n)underset(i = 1)Sigma f_i]`

D

None

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