Mean-It-is-found-by-adding-all-the-values-of-the-observation-and-dividing-it-by-the-total-number-of-observations-It-is-denoted-by-x-So-x-i-1-n-x-i-n-For-an-ungrouped-frequency-

Question Number 122436 by sahiljakhar04 last updated on 17/Nov/20

Mean : It is found by adding all the values of the observation and dividing it by the

total number of observations . It is denoted by \bar{x} .

So, \bar{x} = \frac{\underset{i = 1}{\sum^{n}} x_{i}}{n} . For an ungrouped frequency distribution, it is \bar{x} = \frac{\underset{i = 1}{\sum^{n}} f_{i} x_{i}}{\underset{i = 1}{\sum^{n}} f_{i}} .