var1Test

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

htest

Gives some hypothesis test functions (sign test, median and other quantile tests, Wilcoxon signed rank test, coefficient of variation test, test of normal variance, test on weighted sums of Poisson [see Fay and Kim <doi:10.1002/bimj.201600111>], sample size for t-tests with different variances and non-equal n per arm, Behrens-Fisher test, nonparametric ABC intervals, Wilcoxon-Mann-Whitney test [with effect estimates and confidence intervals, see Fay and Malinovsky <doi:10.1002/sim.7890>], two-sample melding tests [see Fay, Proschan, and Brittain <doi:10.1111/biom.12231>], one-way ANOVA allowing var.equal=FALSE [see Brown and Forsythe, 1974, Biometrics]), prevalence confidence intervals that adjust for sensitivity and specificity [see Lang and Reiczigel, 2014 <doi:10.1016/j.prevetmed.2013.09.015>] or Bayer, Fay, and Graubard, 2023 <doi:10.48550/arXiv.2205.13494>). The focus is on hypothesis tests that have compatible confidence intervals, but some functions only have confidence intervals (e.g., prevSeSp).

Michael Fay

asht

Applied Statistical Hypothesis Tests

var1Test function

<dl> <dt>x</dt>
<dd>numeric vector</dd> <dt>nullVar</dt>
<dd>null variance, or variance on the boundary between the null and alternative hypotheses</dd> <dt>alternative</dt>
<dd>a character string specifying the alternative hypothesis, must be one of "two.sided" (default), "greater" or "less". You can specify just the initial letter.</dd> <dt>conf.level</dt>
<dd>confidence level of the interval</dd></dl>

Arguments

Author

One Sample Test of Normal Variance — var1Test

<dl>

 <dt>x</dt>
<dd>numeric vector</dd>

 <dt>nullVar</dt>
<dd>null variance, or variance on the boundary between the null and alternative hypotheses</dd>

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

 <dt>conf.level</dt>
<dd>confidence level of the interval</dd>

</dl>

var1Test: One Sample Test of Normal Variance

Description

Usage

Value

Arguments

Author

Details

References

Examples