Question

find the sum of the deviations from the Arithmetic mean for the following observations 21, 30, 22, 16, 24, 28, 18, 17​

Answer 1

Answer:

Given,

arithmetic mean=sum of observations/ no. of observations-(1)

sum of observations=21+30+22+16+24+28+18+17=176

no. of observations=8

from (1)

mean=176/8

=22

sum of deviations=(21-22)+(21-30)+(21-22)+(21-16)+(21-24)+(21-28)+(18-21)+(17-21)

=-1-9-1+5+3-7-3-4

=-11+8-17

=-20

Answer 2

Answer:

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