R: Design-based t-test

svyttest {survey}

R Documentation

Design-based t-test

Description

One-sample or two-sample t-test. This function is a wrapper for svymean in the one-sample case and for svyglm in the two-sample case. Degrees of freedom are degf(design) for the one-sample test and degf(design)-1 for the two-sample case.

Usage

svyttest(formula, design,  ...)

Arguments

`formula`	Formula, `outcome~group` for two-sample, `outcome~0` or `outcome~1` for one-sample
`design`	survey design object
`...`	for methods

Value

Object of class htest

Examples

data(api)
dclus2<-svydesign(id=~dnum+snum, fpc=~fpc1+fpc2, data=apiclus2)
svyttest(enroll~comp.imp, dclus2)

svyttest(I(api00-api99)~0, dclus2)