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Topic:
Squares intead Module in standard deviation
Replies:
3
Last Post:
Oct 14, 2013 6:54 PM
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Squares intead Module in standard deviation
Posted:
Oct 12, 2013 12:56 AM
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Why in the formula of standard deviation uses squares instead of simply putting differences within module?
Example:
standard deviation² = Sum[(y-ym)²]/(n-1)
Is not it better this?
standard deviation = Sum[|y-ym|]/(n-1)
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