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 ()

Sample Mean ()

where

N |
= number of data values (for a population) |

n |
= number of data values (for a sample) |

xi |
= ith data value |

See Also

95% and 99% Confidence Interval for the Mean

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

Kolmogorov-Smirnov Goodness of Fit Statistic for Normal Distribution