If x1 , x2 ,. . ., xn are observations w...

If `x_1 , x_2 ,. . ., x_n` are observations with respective frequencies `f_1 , f_2 , . . ., f_n` then sum of the values of all the observations is

A

`x_1 + x_2 + . . . + x_n`

B

`f_1 + f_2 + . . . + f_n`

C

`f_1 x_1 + f_2 x_2 + . . . + f_n x_n `

D

none of these

लिखित उत्तर

Verified by Experts

The correct Answer is:

C

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