standard deviation fomula?

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standard deviation fomula?

2006-08-16 01:01:26 · 2 answers · asked by Mark N 1 in Education & Reference ➔ Other - Education

2 answers

To compute the standard deviation without computing the mean, you
can use this formula:

std dev = sqrt [(B - A^2/N)/N]

where

A is the sum of the data values;

B is the sum of the squared data values;

N is the number of data values.

2006-08-16 01:09:44 · answer #1 · answered by LAdy_psychology 2 · 0⤊ 0⤋

Isn't it the square root of the sum of the squares of the differences between each element and the median?

2006-08-16 08:06:07 · answer #2 · answered by Goddess of Grammar 7 · 0⤊ 0⤋