asymptotic_test2 | R Documentation |
Test for k samples (k sample populations with unequal sized) from Feltz CJ, Miller GE (1996) An asymptotic test for the equality of coefficients of variation from k population. Stat Med 15:647–658
asymptotic_test2(k, n, s, x, seed)
k |
a numeric vector the number of groups |
n |
a numeric vector the numer of measurements in each group |
s |
a numeric vector the standard deviation of each group |
x |
a numeric vector the mean of each group |
seed |
optional, an integer that is the starting point used in the generation of a sequence of random numbers. Include a seed if you want reproducible output. |
a list with the test statistic and p-value
# Summary stats from Feltz and Miller 1996 miller <- data.frame(test = c('ELISA', 'WEHI', '`Viral inhibition`'), Mean = c(6.8, 8.5, 6.0), CV = c(0.090, 0.462, 0.340), N = c(5, 5, 5)) # compute SD from mean and cv miller$SD <- with(miller, CV * Mean) asymptotic_test2(k = nrow(miller), n = miller$N, s = miller$SD, x = miller$Mean)
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