Measures of Central Tendency | Articles on Education of Bangladesh | Uncatagorized

1. It should be rigidly defined.
2. It should be readily comprehensible and easy to calculate.
3. It should be based on all the observations.
4. It should be suitable for further mathematical treatment.
5. It should be affected as little as possible by fluctuations of sampling.

6. It should not be affected much by extreme values.Arithmetic Mean: Arithmetic mean of a set of observations is their sum divided by the number of observations. If x1, x2, x3,………, xn are n observations, the arithmetic mean of this series x is,

1

x = ------- (x1 + x2 + x3 +………, + xn)

n

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