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Card 25 / 25:
Variance
mean of the squared deviations from the mean, or the square of the standard deviation; for a set of data, a deviation can be represented as x – x ¯ where x is a value of the data and x ¯ is the sample mean. The sample variance is equal to the sum of the squares of the deviations divided by the difference of the sample size and one.
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