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Carlo Beenakker
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the variance of $Y$ is smaller than the variance of $X$ by a factor $\sqrt{1-\frac{n-1}{N-1}}$; for a derivation, see for example section 1.2 of herethese notes.

the variance of $Y$ is smaller than the variance of $X$ by a factor $\sqrt{1-\frac{n-1}{N-1}}$, see for example here

the variance of $Y$ is smaller than the variance of $X$ by a factor $\sqrt{1-\frac{n-1}{N-1}}$; for a derivation, see for example section 1.2 of these notes.

Source Link
Carlo Beenakker
  • 188.1k
  • 18
  • 448
  • 651

the variance of $Y$ is smaller than the variance of $X$ by a factor $\sqrt{1-\frac{n-1}{N-1}}$, see for example here