Why do we use standard deviation and what happens if we define deviation in a different way?
63341
What's so special about standard deviation?
139701
Standard deviation of a ratio (percentage change)
96914
What does the size of the standard deviation mean?
99921
unknown standard deviation = range/4
70999
Why does this excerpt say that unbiased estimation of standard deviation usually isn't relevant?
48618
Why is there a difference between a population variance and a sample variance
58398
What is the difference between using a probability distribution and using the mean of observations only as a measure to describe the data?
58541
What does standard deviation tell us in non-normal distribution
40076
Correct Intuition? Standard Deviation and distance in $n$ dimensional space.
60336
Where does the misconception that Y must be normally distributed come from?
33622
Detecting outliers using standard deviations
137654
Sample Standard Deviation vs. Population Standard Deviation
58810
I've heard that ratios or inverses of random variables often are problematic, in not having expectations. Why is that?
1301
Expected value and standard deviation of $X^2$ in terms of moments of $X$
125672
Repeatedly rolling a six sided die four times and summing the highest three results gives you a distribution with what mean and standard deviation?
11949
How does the standard error work?
12284
Mean Value Theorem Motivation