Standard Deviation

 

The standard deviation is the square root of the variance.

 

Population Standard Deviation () 

image\popsd.png

 

Sample Standard Deviation (s)

image\samsd.png

 

where

= Population Variance

s2

= Sample Variance

 

 

See Also

Data Statistics

95% and 99% Confidence Interval for the Mean

Average Deviation

Coefficient of Kurtosis

Coefficient of Skewness

Coefficient of Variation

Critical Value of K-S Statistic at 90%, 95%, and 99% Significance Level

Kolmogorov-Smirnov Goodness of Fit Statistic for Normal Distribution

Mean

Standard Error of the Mean

Statistics References

Variance