Why do people use standard deviation instead of variance?
98697
What's the difference between variance and standard deviation?
45891
When (and why) should you take the log of a distribution (of numbers)?
48618
Why is there a difference between a population variance and a sample variance
142777
Skewness, kurtosis and how many standard deviations values are from the mean
38858
Explained Variance
9192
Intuitive explanation for dividing by $n-1$ when calculating standard deviation?
141138
Calculate variance and standard deviation for Log Normal Distribution
85385
Why do we need multivariate regression (as opposed to a bunch of univariate regressions)?
36606
Why the standard deviation of the sample mean is calculated as $\frac{\sigma}{\sqrt{n}}$?
15530
Variance of sample mean.
93521
Why is the expected value (mean) of a variable written using square brackets?
20848
Why use a certain measure of forecast error (e.g. MAD) as opposed to another (e.g. MSE)?
98527
What is the difference between normal distribution and standard normal distribution?
37371
Why is expected value of random variable equal to mean
96497
Population Variance and Sample Variance
150004
Estimated standard deviation of difference between means in case of known and unknown variance?
58249
Why do we use a Least Squares fit?