The sum of all deviations of the data from its mean is ______ a)always positive b) always nagative c) zero d)nonzero integer
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Answer:
a) always positive
Step-by-step explanation:
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Step-by-step explanation:
The sum of deviation above the mean .
= The sum of deviation below the mean .
= The sum of all deviation of the data from its mean value = 0 .
The correct answer is (c)
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