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(4 pts) The definition of variance is the expectation of the squared deviation from the mean. Why
then do we use the formula s2=N11n=1N(xnx)2 to estimate variance from a sample of
observations?

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4 pts The definition of variance is the expectation of the.pdf

  • 1. (4 pts) The definition of variance is the expectation of the squared deviation from the mean. Why then do we use the formula s2=N11n=1N(xnx)2 to estimate variance from a sample of observations?