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Algebraic sum of all the deviation from 30 of 50 observations

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Algebraic sum of all the deviation from 30 of 50 observations is 50. Find their mean (A) $20$ (B) $30$ (C) $80$ (D) $31$

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Algebraic sum of all the deviation from 30 of 50 observations is 50. Find their mean (A)

20

(B)

30

(C)

80

(D)

31

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Question Text	Algebraic sum of all the deviation from 30 of 50 observations is 50. Find their mean (A) $20$ (B) $30$ (C) $80$ (D) $31$
Answer Type	Video solution: 1
Upvotes	150