Shortcut formulae

Shortcut formulae - For example, using these six measures:...

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Shortcut formulae A shortcut method of calculating variance and standard deviation requires two quantities: sum of the  values and sum of the squares of the values.   Σ x  = sum of the measures    Σ x 2 = sum of the squares of the measures 
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Unformatted text preview: For example, using these six measures: 3, 9, 1, 2, 5, and 4: The quantities are then substituted into the shortcut formula to find . The variance and standard deviation are now found as before:...
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This note was uploaded on 11/15/2011 for the course QMST 2333 taught by Professor Mendez during the Fall '08 term at Texas State.

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