How To Calculate Arithmetic Mean In Discrete Series?

Описание к видео How To Calculate Arithmetic Mean In Discrete Series?

STATISTICS - How to Calculate Arithmetic Mean in Discrete Series?

Mean is simply defined as the ratio of the summation of all values to the number of items

Discrete series means where frequencies of a variable are given but the variable is without class intervals. Here the mean can be found by Three Methods.

(i) Direct Method:

Here each frequency is multiplied by the variable, taking the total and dividing total by total number of frequencies, we get X.

Symbolically,

X = ∑fx/N

Where f = frequency,
X = the value of the variable
And N = the sum of frequency or N = ∑f

(ii) Short Cut Method: Here Assumed Mean is taken and taking deviations of the variable from it.

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