If the algebraic sum of deviations of 20 observations from 30 is 20, then the mean of observations is

If the algebraic sum of deviations of 20 observations from 30 is 20, t

1.	If the algebraic sum of deviations of 20 observations from 30 is 20, then the mean of observations is
A.	30
B.	30.1
C.	29
D.	31
Answer» E.

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If the algebraic sum of deviations of 20 observations from 30 is 20, then the mean of observations is

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