| |

Go to: Next · Previous · Contents · Search · Home |

Simple Statistics: THE SPREAD continued

** Percentile Ranges
**

Here's something challenging for the real lovers of numbers. The mean ± SD encloses 68% of the data on average for a normally distributed variable. So if you want to use a percentile range that corresponds to the mean ± SD, what should it be? Answer: 16th-84th. If I had my way, this measure would replace the interquartile range. We could call it the standard percentile range…

We're right out on the horizon now. Let's get back to familiar territory.

Go to: Next · Previous · Contents · Search · Home

resources=AT=sportsci.org · webmaster=AT=sportsci.org · Sportsci Homepage · Copyright ©1997

Last updated 29 April 97