ci.sigma {asbio} | R Documentation |
The function calculates confidence intervals for \sigma^2
. We assume that the parent population is normal.
ci.sigma(data, conf = 0.95, S.sq = NULL, n = NULL, summarized = FALSE)
data |
A vector of quantitative data. Required if |
conf |
Level of confidence. 1 - P(type I error). |
S.sq |
Sample variance, required if |
n |
Sample size, required if |
summarized |
Logical. If |
Returns a list of class = "ci"
. Default printed results are the point estimate and confidence bounds. Other objects are invisible
.
Ken Aho
Bain, L. J., and M. Engelhardt. 1992. Introduction to Probability and Mathematical Statistics. Duxbury press. Belmont, CA, USA.
ci.sigma(rnorm(20))