Variance explained for averaged values
102141
Hacking linear regression
6590
PCA and proportion of variance explained
131264
Motivation For Weight Choice In Pooled Variance
138325
Equivalence of two formulas for variance and covariance
39958
Does the variance of a sum equal the sum of the variances?
146956
In simple linear regression, where does the formula for the variance of the residuals come from?
20038
Conceptual questions: Variance of a process
53988
How to compute sample variance?
154022
Weighted Variance, one more time
9192
Intuitive explanation for dividing by $n-1$ when calculating standard deviation?
146190
Question about the relationship between the variance of residuals and variances of the data points
109310
Understanding “the mean minimizes the mean squared error”
119153
Explaining Mean, Median, Mode in Layman's Terms
23476
Derivation of mean and variance of Hypergeometric Distribution
37371
Why is expected value of random variable equal to mean
67246
How would you explain covariance to someone who understands only the mean?
36807
Derivation of OLS Variance