LIvar {LBI} | R Documentation |
Likelihood Interval of the ratio of two variances from two groups
Description
Likelihood interval of the ratio of two variances from two groups assuming normal distribution. Likelihood interval usually gives a narrower interval when the likelihood function is asymmetric.
Usage
LIvar(x, y, k, conf.level=0.95)
Arguments
x |
observations from the first group, used for the numerator |
y |
observations from the second group, used for the denominator |
k |
1/k likelihood interval will be provided |
conf.level |
approximate confidence level |
Details
It calculates likelihood interval of the ratio of two variances from two groups. Likelihood interval usually gives a narrower interval when the likelihood function is asymmetric.
Value
v1 |
variance of the first group |
v2 |
variance of the second group |
PE |
point estimation for the proportion |
LL |
lower limit of likelihood interval |
UL |
upper limit of likelihood interval |
logk |
log(k) value |
maxLL |
maximum log likelihood |
Author(s)
Kyun-Seop Bae k@acr.kr
Examples
LIvar(mtcars$drat, mtcars$wt)
var.test(mtcars$drat, mtcars$wt)
LIvar(mtcars$qsec, mtcars$wt)
var.test(mtcars$qsec, mtcars$wt)