Question

The mean of a discrete frequency distribution x_i / f_i, i = 1, 2, ......, n is given by

Options

• `overlineX = (sum f_ix_i)/(sumf_i)`

• \[\frac{1}{n} \sum^n_{i = 1} f_i x_i\]

• \[\frac{\sum^n_{i = 1} f_i x_i}{\sum^n_{i = 1} x_i}\]

• \[\frac{\sum^n_{i = 1} f_i x_i}{\sum^n_{1 = 1} i}\]

Answer 1

The mean of discrete frequency distribution is

`overlineX = (sum f_ix_i)/(sumf_i)`

Hence, the correct option is (a).