Where does the 12 come from in the denominator of the variance formula in the Wilcoxon (Mann-Whitney U) test?
120886
Where does the number 12 come from and why is it the same 12 in Wilcoxon and Kruskal Wallis?
98064
Why is the sampling distribution of variance a chi-squared distribution?
102196
How is the augmented Dickey–Fuller test (ADF) table of critical values calculated?
128639
Homoskedasticity Assumption: Var(y|x)=Var(u|x)=constant?
42345
Degrees of freedom in theoretical sample variance (for use in F-distribution)
153056
From where term $\left(\frac{1}{n}+\frac{1}{m}\right)$ came in estimated variance of $\bar x - \bar y$
2824
The derivation of the Wald interval
102617
How do I interpret the Mann-Whitney U when using R's formula interface
158705
When to use the Wilcoxon rank-sum test instead of the unpaired t-test?
144296
Mean Squared Error (MSE) of parameter $p$ in binomial distribution: intuition
138529
Why is the standard deviation defined as sqrt of the variance and not as the sqrt of sum of squares over N?
11953
Mann-Whitney U test with unequal sample sizes
142777
Skewness, kurtosis and how many standard deviations values are from the mean
9192
Intuitive explanation for dividing by $n-1$ when calculating standard deviation?
42510
Always use Welch-t test (unequal variances t-test) instead of Student-t or Mann-Whitney test?
23476
Derivation of mean and variance of Hypergeometric Distribution
85351
Standard Deviation. Why do we take the square root of the entire equation?