John Galt University
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Variance is the average of the squared differences between the values and the Mean in a series of numbers.
The formula for variance is:
| S2 = |
Snt=1 (Xt - µt)2
__________
n-1
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The variables used in variance are defined as follows:
X = the value of the statistic
n = the number of values
µ= the Mean of all the values
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