What is population variance?

Ethan White | 2018-06-17 12:10:00 | page views：1174

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Works at Facebook, Lives in Menlo Park. Holds a degree in Computer Engineering from Stanford University.

In probability theory and statistics, variance is the expectation of the squared deviation of a random variable from its mean. Informally, it measures how far a set of (random) numbers are spread out from their average value.

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: Variance - Wikipedia
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