# immer

From MASS v7.3-51.1
by Brian Ripley

##### Yields from a Barley Field Trial

The `immer`

data frame has 30 rows and 4 columns. Five varieties of
barley were grown in six locations in each of 1931 and 1932.

- Keywords
- datasets

##### Usage

`immer`

##### Format

This data frame contains the following columns:

`Loc`

The location.

`Var`

The variety of barley (

`"manchuria"`

,`"svansota"`

,`"velvet"`

,`"trebi"`

and`"peatland"`

).`Y1`

Yield in 1931.

`Y2`

Yield in 1932.

##### References

Venables, W. N. and Ripley, B. D. (1999)
*Modern Applied Statistics with S-PLUS.* Third
Edition. Springer.

##### Examples

```
# NOT RUN {
immer.aov <- aov(cbind(Y1,Y2) ~ Loc + Var, data = immer)
summary(immer.aov)
immer.aov <- aov((Y1+Y2)/2 ~ Var + Loc, data = immer)
summary(immer.aov)
model.tables(immer.aov, type = "means", se = TRUE, cterms = "Var")
# }
```

*Documentation reproduced from package MASS, version 7.3-51.1, License: GPL-2 | GPL-3*

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