Showing DF Times S-squared / sigma-squared is a chi-square
137826
How is MSE divided by $\sigma^2$ always a chi-square distribution?
139622
Generator of rational functions unchanged under $\sigma(X) = X + 1$
145352
How to prove $\sum_{d|n} {\tau}^3(d)=\left(\sum_{d|n}{\tau}(d)\right)^2$
17241
How to prove $ \prod_{d|n} d= n^{\frac{\tau (n)}{2}}$
40861
Plotting the chi square distribution with TikZ
140440
Proving $(A\times C)\cup(B\times D)\subseteq(A\cup B)\times(C\cup D)$
139569
How to prove that $\hat\sigma^2$ has $\chi^2_{n-p}$ distribution (linear regression)
139905
Is the chi-squared test appropriate with many small counts in a 5x2 table?
146656
Multivariate Application of Slutsky's lemma
43500
How to show this curious combination of Exponential order statistics has a Chi-squared distribution?
141643
Showing $\rho (x,y)=\frac{d(x,y)}{1+d(x,y)}$ is a metric
41028
Is there a combinatorial way to see the link between the beta and gamma functions?
154178
Performing a chi-square goodness of fit test
54731
Derivation of chi-squared pdf with one degree of freedom from normal distribution pdf
131626
Finding the distribution of $\|X-\mu \|_\Sigma^2$ with $X \sim N(\mu,\Sigma)$
102030
Getting the expectation symbol to behave like $\sum$ instead of $\Sigma$
141194
Prove that $\frac{(n-2)s^2}{\sigma^2}\sim \chi^{2}_{n-2}$