Standard deviation of the weighted mean
158388
Sampling error with weighted mean
154022
Weighted Variance, one more time
120275
How do I obtain the "final" standard deviation from a series of values containing individual (also null) SD values?
65259
Variance of Normal Order Statistics
108690
The weighted sum of two independent Poisson random variables
70621
Question concerning the mean-value property
156906
asymptotic p values of standard normal distributed ? how to calculate them?
79930
Standard deviation of revenue where numbers are only positive
138529
Why is the standard deviation defined as sqrt of the variance and not as the sqrt of sum of squares over N?
103357
Estimate the population variance from a set of means
37786
Variance with minimal MSE in normal distribution
39939
Variance of sample median
30641
Confidence interval for mean of a uniform distribution
12709
Moments of the truncated normal distribution (univariate) away from the mean
38829
Calculate the mean by group
94853
The linearity of variance
136419
Variance of the distribution of difference scores