In calculating the standard deviation, why do we square the difference from the mean, as opposed to cubing?
21521
Motivation behind standard deviation?
132040
Don't understand the integral over the square of the Dirac delta function
84018
Why is there not a simpler way to calculate the standard deviation?
56037
Arithmetic mean. Why does it work?
45364
Why is there a $2$ at the denominator of the mean squared error function?
102390
Double vs. BigDecimal?
44332
Explaining different Standard Deviation results from same data in ArcGIS Desktop and MS Excel?
137812
Why does magnetic force vary in proportion to the cube of the distance instead of the square?
63341
What's so special about standard deviation?
10079
Standard error of the median
99507
Pdf of the square of a standard normal random variable
58541
What does standard deviation tell us in non-normal distribution
132440
Should the mean be used when data are skewed?
66296
Two different formulas for standard error of difference between two means
30431
How is the notation $X\sim N(\mu,\sigma^2)$ read?
76489
What is the standard error of the sample standard deviation?
56193
How does one go about determining the standard deviation of an entire sample data set?