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Question
Find the sum of the deviations of the variate values 3, 4, 6, 7, 8, 14 from their mean.
Solution
Values are 3,4,6,7,8,14.
∴ Mean = `"sum of numbers"/" Total number"`
= `(3 + 4 + 6 + 7 + 8 +14)/6`
`= 42 /6`
= 7.
∴ Sum of deviation of values from their mean
⇒ (3 - 7) + (4 - 7) + (6 - 7) + (7 - 7) + (8 - 7) + (14 - 7)
⇒ (-4) + (-3) + (-1) + (0) + (1) + (7)
⇒ - 8 +8
= 0.
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