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Explain role and importance of research in managerial planning and decisoon making

Answer»

Explanation:

ANCESTRAL houseTo calculate the standard deviation for a sample of N measurements:

Sum all the measurements and DIVIDE by N to get the AVERAGE, or mean.

Now, subtract this average from each of the N measurements to obtain N "deviations".

Square each of these N deviations and ADD them all up.

Divide this result by. (N − 1)



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