tukey.1df {dae} | R Documentation |

## Performs Tukey's one-degree-of-freedom-test-for-nonadditivity

### Description

Performs Tukey's one-degree-of-freedom-test-for-nonadditivity on a set of residuals from an analysis of variance.

### Usage

`tukey.1df(aov.obj, data, error.term="Within")`

### Arguments

`aov.obj` |
An |

`error.term` |
The term from the |

`data` |
A |

### Value

A `list`

containing Tukey.SS, Tukey.F, Tukey.p, Devn.SSq being the SSq
for the 1df test, F value for test and the p-value for the test.

### Note

In computing the test quantities fitted values must be obtained.
If `error.term`

is specified, fitted values will be the sum of
effects extracted from terms from the `Error`

function, but only down
to that specified by `error.term`

.The order of terms is as given in the
ANOVA table. If `error.term`

is unspecified, all effects for terms
external to any `Error`

terms are extracted and summed.

Extracted effects will only be for terms external to any `Error`

function.
If you want effects for terms in the `Error`

function to be included,
put them both inside and outside the `Error`

function so they are
occur twice.

### Author(s)

Chris Brien

### See Also

`fitted.errors`

, `resid.errors`

in package dae.

### Examples

```
## set up data frame for randomized complete block design in Table 4.4 from
## Box, Hunter and Hunter (2005) Statistics for Experimenters. 2nd edn
## New York, Wiley.
RCBDPen.dat <- fac.gen(list(Blend=5, Flask=4))
RCBDPen.dat$Treat <- factor(rep(c("A","B","C","D"), times=5))
RCBDPen.dat$Yield <- c(89,88,97,94,84,77,92,79,81,87,87,
85,87,92,89,84,79,81,80,88)
## perform the analysis of variance
RCBDPen.aov <- aov(Yield ~ Blend + Treat + Error(Blend/Flask), RCBDPen.dat)
summary(RCBDPen.aov)
## Obtain the quantities for Tukey's test
tukey.1df(RCBDPen.aov, RCBDPen.dat, error.term = "Blend:Flask")
```

*dae*version 3.2.28 Index]