svyttest | R Documentation |
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)-1
for the one-sample test and degf(design)-2
for the two-sample case.
svyttest(formula, design, ...)
formula |
Formula, |
design |
survey design object |
... |
for methods |
Object of class htest
t.test
data(api)
dclus2<-svydesign(id=~dnum+snum, fpc=~fpc1+fpc2, data=apiclus2)
tt<-svyttest(enroll~comp.imp, dclus2)
tt
confint(tt, level=0.9)
svyttest(enroll~I(stype=="E"),dclus2)
svyttest(I(api00-api99)~0, dclus2)
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