Why use Chi-squared distribution to estimate the variance of normal distribution?
99504
Why is chi square used when creating a confidence interval for the variance?
96347
Why can we use sample variance of the treatment group to estimate population variance of the controls?
139569
How to prove that $\hat\sigma^2$ has $\chi^2_{n-p}$ distribution (linear regression)
125991
Calculation of Pearson's Chi-squared statistic
48968
What is wrong with this chi-squared calculation?
42345
Degrees of freedom in theoretical sample variance (for use in F-distribution)
141861
What is meant by the variance of *functions* in *Introduction to Statistical Learning*?
58249
Why do we use a Least Squares fit?
58017
When is it necessary to estimate the covariance matrix instead of calculating it directly?
123962
Calculation of the n-th central moment of the normal distribution $\mathcal{N}(\mu,\sigma^2)$
138529
Why is the standard deviation defined as sqrt of the variance and not as the sqrt of sum of squares over N?
46044
Calculating Variance of a binomial distribution using the standard formula $E(X^2) - \mu^2$
40861
Plotting the chi square distribution with TikZ
8860
Why square the difference instead of taking the absolute value in standard deviation?
51840
The standard normal distribution vs the t-distribution
150004
Estimated standard deviation of difference between means in case of known and unknown variance?
53988
How to compute sample variance?