if a random variable X has variance(adsbygoogle = window.adsbygoogle || []).push({}); sigma, does it mean that the average variance of X will besigma, or will X always have variancesigma.

So if I did 10 simulations of the random variable X, is it plausiable that the variances differ widely, but the average of the variances converge to the theoretical variance, or do each of the variance have to be the same.

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# Simple variance question

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