Hi,

The control chart created for moving avg type for an inspection lot contains the following

Mean 46

std dev 16.25

No of values 10

Partial sample 1

Lowest limit 1

Target 50

Highest Limit 100

How the standard deviation is calculated here? Please give the logic or formula

Refer

http://www.mathsrevision.net/gcse/pages.php?page=42

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Check :

http://www.easycalculation.com/statistics/standard-deviation.php

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