Published Online: 15 JUL 2005
Copyright © 2005 John Wiley & Sons, Ltd
Encyclopedia of Biostatistics
How to Cite
Morrison, D. F. 2005. Scedasticity. Encyclopedia of Biostatistics. 7.
- Published Online: 15 JUL 2005
Homoscedasticity is the condition under which a series of observations have the same degree of variation. Heteroscedasticity is its negation. Homoscedasticity is assumed in the standard models for least squares linear regression, the two-sample t test and the analysis of variance, and the effects of heteroscedasticity in these situations are discussed here.
- least squares;
- linear regression;
- t test;
- analysis of variance;