| Line 41... |
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| 41 |
correction in the normal approximation for the p-value.}
|
41 |
correction in the normal approximation for the p-value.}
|
| 42 |
\item{conf.int}{a logical indicating whether a confidence interval
|
42 |
\item{conf.int}{a logical indicating whether a confidence interval
|
| 43 |
should be computed.}
|
43 |
should be computed.}
|
| 44 |
\item{conf.level}{confidence level of the interval.}
|
44 |
\item{conf.level}{confidence level of the interval.}
|
| 45 |
\item{formula}{a formula of the form \code{lhs ~ rhs} where \code{lhs}
|
45 |
\item{formula}{a formula of the form \code{lhs ~ rhs} where \code{lhs}
|
| 46 |
is a numeric variable giving the data values and \code{rhs} a factor
|
46 |
is a numeric variable giving the data values and \code{rhs} either
|
| - |
|
47 |
\code{1} for a one-sample or paired test or a factor
|
| 47 |
with two levels giving the corresponding groups.}
|
48 |
with two levels giving the corresponding groups. If \code{lhs} is of
|
| - |
|
49 |
class \code{"Pair"} and \code{rhs} is \code{1}, a paired test is done}
|
| 48 |
\item{data}{an optional matrix or data frame (or similar: see
|
50 |
\item{data}{an optional matrix or data frame (or similar: see
|
| 49 |
\code{\link{model.frame}}) containing the variables in the
|
51 |
\code{\link{model.frame}}) containing the variables in the
|
| 50 |
formula \code{formula}. By default the variables are taken from
|
52 |
formula \code{formula}. By default the variables are taken from
|
| 51 |
\code{environment(formula)}.}
|
53 |
\code{environment(formula)}.}
|
| 52 |
\item{subset}{an optional vector specifying a subset of observations
|
54 |
\item{subset}{an optional vector specifying a subset of observations
|
| Line 184... |
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| 184 |
wilcox.test(y - x, alternative = "less") # The same.
|
186 |
wilcox.test(y - x, alternative = "less") # The same.
|
| 185 |
wilcox.test(y - x, alternative = "less",
|
187 |
wilcox.test(y - x, alternative = "less",
|
| 186 |
exact = FALSE, correct = FALSE) # H&W large sample
|
188 |
exact = FALSE, correct = FALSE) # H&W large sample
|
| 187 |
# approximation
|
189 |
# approximation
|
| 188 |
|
190 |
|
| - |
|
191 |
## Formula interface to one-sample and paired tests
|
| - |
|
192 |
|
| - |
|
193 |
depression <- data.frame(first = x, second = y, change = y - x)
|
| - |
|
194 |
wilcox.test(change ~ 1, data = depression)
|
| - |
|
195 |
wilcox.test(Pair(first, second) ~ 1, data = depression)
|
| - |
|
196 |
|
| 189 |
## Two-sample test.
|
197 |
## Two-sample test.
|
| 190 |
## Hollander & Wolfe (1973), 69f.
|
198 |
## Hollander & Wolfe (1973), 69f.
|
| 191 |
## Permeability constants of the human chorioamnion (a placental
|
199 |
## Permeability constants of the human chorioamnion (a placental
|
| 192 |
## membrane) at term (x) and between 12 to 26 weeks gestational
|
200 |
## membrane) at term (x) and between 12 to 26 weeks gestational
|
| 193 |
## age (y). The alternative of interest is greater permeability
|
201 |
## age (y). The alternative of interest is greater permeability
|
| Line 203... |
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| 203 |
|
211 |
|
| 204 |
## Formula interface.
|
212 |
## Formula interface.
|
| 205 |
boxplot(Ozone ~ Month, data = airquality)
|
213 |
boxplot(Ozone ~ Month, data = airquality)
|
| 206 |
wilcox.test(Ozone ~ Month, data = airquality,
|
214 |
wilcox.test(Ozone ~ Month, data = airquality,
|
| 207 |
subset = Month \%in\% c(5, 8))
|
215 |
subset = Month \%in\% c(5, 8))
|
| - |
|
216 |
|
| 208 |
}
|
217 |
}
|
| - |
|
218 |
|
| - |
|
219 |
|
| 209 |
\keyword{htest}
|
220 |
\keyword{htest}
|
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