Confidence Intervals for Mean Absolute Deviations

Creator(s)

Douglas G. Bonett, Iowa State University
Edith Seier, East Tennessee State UniversityFollow

Document Type

Article

Publication Date

1-1-2003

Description

The mean absolute deviation is a simple and informative measure of variability. Approximate confidence intervals for mean absolute deviations in one-group and two-group designs are derived and are shown to have excellent small-sample properties under moderate nonnormality. Sample size planning formulas are derived.

Citation Information

Bonett, Douglas G.; and Seier, Edith. 2003. Confidence Intervals for Mean Absolute Deviations. American Statistician. Vol.57(4). 233-236. https://doi.org/10.1198/0003130032323 ISSN: 0003-1305