Question

bhai koi batayega ki arithmetic mean kaise nikalte hai​

Answer 1

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Arithmetic mean is a commonly used average to represent a data. It is obtained by simply adding all the values and dividing them by the number of items. Arithmetic mean can be a simple arithmetic mean or weighted arithmetic mean.

In direct method, the arithmetic mean is calculated by the following formula:

The above formula shows that the sum of product of frequencies with their respective variables (Σfx) is to be divided by the sum of the frequencies (Σf) to derive arithmetic mean.