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Differences in Globulin Fraction in Two Groups

globulin.Rd

Globulin fraction of plasma (g/l) in two groups of 10 patients.

Usage

data(globulin)

Format

This data frame contains the following variables:

gfrac

Globulin fraction of plasma

group

a factor with levels group1 and group2

Details

See page 75 of Gardner & Altman (1989).

Source

M. J. Gardner & D. G. Altman (1989), Statistics with Confidence. Published by the British Medical Journal.

References

Joachim R\"ohmel (1996), Precision intervals for estimates of the difference in success rates for binary random variables based on the permutation principle. Biometrical Journal, 38(8), 977–993.

Examples

data(globulin)
perm.test(gfrac ~ group, data=globulin, conf.int=TRUE)
#> 
#> 	2-sample Permutation Test
#> 
#> data:  gfrac by group
#> T = 331, p-value = 0.1475
#> alternative hypothesis: true mu is not equal to 0
#> 95 percent confidence interval:
#>  -8.50  1.25
#>