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I am confused about the difference between the variance and the Squared deviations from the mean. Are they similar? or what is the difference between them?

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    $\begingroup$ Welcome to CV. Please tell us what, exactly, you mean by "squared deviation". The variance is the square of the standard deviation. $\endgroup$
    – Peter Flom
    Sep 3, 2018 at 12:09
  • $\begingroup$ @PeterFlom It's the Squared deviations from the mean $\endgroup$
    – Adam Amin
    Sep 3, 2018 at 12:12
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    $\begingroup$ The variance is the average of those squared deviations. $\endgroup$
    – dbwilson
    Sep 3, 2018 at 12:34
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    $\begingroup$ Do you mean the usual variance estimator with $n-1$ in the denominator versus the estimator with $n$ in the denominator? $\endgroup$
    – Dave
    Jul 13, 2019 at 19:09

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Partially answered in comments:

The variance is the average of those squared deviations.

– dbwilson

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