Mean

The mean is the arithmetic average of the data values. It is the sum of the data values divided by the number of data values.

Population Mean ()

image\popmean.png  

Sample Mean ()

image\sammean.png

where

N

= number of data values for a population

n

= number of data values for a sample

xi

= ithdata value

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

Standard Deviation

Standard Error of the Mean

Statistics References

Variance