$$\hat { p } \text { is a statistic. }$$ $$\text { The variance of } \hat { p } \text { is } \sqrt { \frac { p ( 1 - p ) } { n } }$$

Question

Quizplus · Accepted Answer

The variance of a statistic is a measure of how much the statistic varies from its expected value. The variance of the sample proportion is given by the formula $\sqrt { \frac { p ( 1 - p ) } { n } }$, where p is the population proportion and n is the sample size.

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$\hat { p } \text { is a statistic. }$