Formula for pooling means, variances
12817
Determining true mean from noisy observations
53988
How to compute sample variance?
64621
Calculate mean and autocovariance function to check stationarity
91781
Formula for weighted simple linear regression
154022
Weighted Variance, one more time
9356
Derivation of the formula for Ordinary Least Squares Linear Regression
63580
Convergence in distribution, probability, and 2nd mean
38224
Bias-Variance decomposition derivation
42861
Inverse of sum of exponential random variables (mean and variance)
57387
Deriving Mean and Variance of Laplace Distribution
23476
Derivation of mean and variance of Hypergeometric Distribution
39939
Variance of sample median
96906
Calculating statistics on subsets of data
150004
Estimated standard deviation of difference between means in case of known and unknown variance?
7274
Calculate group mean (or other summary stats) and assign to original data
78622
How to understand the combination formula?
94853
The linearity of variance