var1Test {asht}

One Sample Test of Normal Variance

Description

Give tests and confidence intervals on the variance of a sample from a normal distribution.

Usage

var1Test(x, nullVar = 1, 
   alternative = c("two.sided", "less", "greater"), 
   conf.level = 0.95)

Arguments

x

numeric vector

nullVar

null variance, or variance on the boundary between the null and alternative hypotheses

alternative

a character string specifying the alternative hypothesis, must be one of "two.sided" (default), "greater" or "less". You can specify just the initial letter.

conf.level

confidence level of the interval

Details

Tests derived from normality assumption.

Value

A list of class 'htest' (use str to see elements)

Author(s)

Michael P. Fay

References

Dudewicz, EJ and Mishra, SN (1988) Modern Mathematical Statistics. Wiley. (Section 9.6).

Examples

var1Test(rnorm(25))