Q1 of 108 Page 33

For a frequency distribution mean deviation from mean is computed by

The general formula of Mean is


For mean deviation, d = (x-mean)


M.D =

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6

If each observation of a raw data whose standard deviation is σ is multiplied by a, then write the S.D. of the new set of observations.

 7

If a variable X takes values 0, 1, 2, ….., n with frequencies nC0, nC1, nC2, …….nCn, then write variance X.

 2

For a frequency distribution standard deviation is computed by applying the formula

 3

If v is the variance and σ is the standard deviation, then