7.2: Sample Variance - Statistics LibreTexts
https://stats.libretexts.org/Courses/Saint_Mary's_College_Notre_Dame/DSCI_500B_Essential_Probability_Theory_for_Data_Science_(Kuter)/07%3A_The_Sample_Variance_and_Other_Distributions/7.2%3A_Sample_Variance
WEBNov 10, 2020 · In this section, we formalize this idea and extend it to define the sample variance, a tool for understanding the variance of a population. Estimating μ μ and σ2 σ 2. Up to now, μ μ denoted the mean or expected value of a random variable. In other words, it represented a parameter of a probability distribution.
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