A multi sample test for the equality of coefficients of variation in normal populations
- 1 January 1983
- journal article
- research article
- Published by Taylor & Francis in Communications in Statistics - Simulation and Computation
- Vol. 12 (2) , 147-158
- https://doi.org/10.1080/03610918308812308
Abstract
Two tests are derived for the hypothesis that the coefficients of variation of k normal populations are equal. The k samples may be of unequal size. The first test is the likelihood ratio test with the usual X2-approximation. A simulation study shows that the small sample behaviour under the null hypothesis is unsatisfactory. An alternative test, based on the sample coefficients of variation, appears to have somewhat better properties.Keywords
This publication has 1 reference indexed in Scilit:
- A note on testing the mems of normal distributions with known coefficient of variationsCommunications in Statistics - Theory and Methods, 1978