✦ LIBER ✦

Use of Ranks in Comparisons of Variability in the Non-Normal Populations

✍ Scribed by S. C. Rai; Shanti Sarup

Publisher: John Wiley and Sons
Year: 1988
Tongue: English
Weight: 324 KB
Volume: 30
Category: Article
ISSN: 0323-3847
DOI: 10.1002/bimj.4710300708

No coin nor oath required. For personal study only.

✦ Synopsis

A method of analysie for comparing the variability of two samples drawn from two populations has been developed. The method is ale0 snitable for the nonnumeric form of data. A test b d on ordered obseivationa for teating the null hypothesis of equality of two variances has been given.

The teat statistic is a function of the sum of ranks essigned to amaller size sample. Ranking procedure has been modified to depict the variability in the data by the sum of ranks. The null diatribution of the test-statistic has been worked out for small sample& and i t turns out to be chi-square distribution for large mmplea. The analytical procedure h a been explained by a numerical example on the productivity and production of rice and wheat in India from 1950-51 to 1983-84.

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