Asked by VEDIKA.L | 13th Mar, 2010, 03:47: PM
Deviation is the particular observation subtracted from the mean value.
For example, for data point 1,2,3, the mean is (1+2+3)/3 = 2.
Now the deviation of first observations i.e. 1 from mean = 1-2 = -1.
Deviation of second observation = 2-2 = 0.
Deviation of third observation = 3-2 = 1.
Sum of deviations = -1+0+1 = 0.
This is true for any number of observations.
Answered by | 13th Mar, 2010, 04:36: PM
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