qnormvar {cdfinv} | R Documentation |
Inverse cumulative distribution function for chi-square distribution
Description
Computes the value of sample variance corresponding to the input quantile p of the chi-square distribution for n-1 degrees of freedom
Usage
qnormvar(p, sigma2, n)
Arguments
p |
the cdf value (named in accordance with R standards) |
sigma2 |
the assumed normal variance |
n |
the sample size (pass this as an extra argument to cdfinv()) |
Details
Do not call qnormvar() directly. Pass DISTR="normvar" to cdfinv() when computing intervals for the normal variance. The parameter name to be passed to cdfinv() is sigma2. The additional argument n (sample size) is to be passed to cdfinv().
Value
The value of sample variance corresponding to the input quantile p of the chi-square distribution for n-1 degrees of freedom
Author(s)
Peter E. Freeman, pfreeman@cmu.edu
[Package cdfinv version 0.1.0 Index]