# sufficient

From HH v3.1-39
by Richard Heiberger

##### Calculates the mean, standard deviation, and number of observations in each group of a data.frame that has one continuous variable and two factors.

Calculates the mean, standard deviation, and number of observations in each group of a data.frame that has one continuous variable and two factors.

##### Usage

```
sufficient(x,
yname = dimnames(x)[[2]][[1]],
factor.names.keep = dimnames(x)[[2]][-c(1, 2)])
```

##### Arguments

- x
`data.frame`

containing a continuous variable and two factors.- yname
Character name of response variable.

- factor.names.keep
Character vecotr containing the names of two factors in the

`x`

data.frame.

##### Value

Data.frame containing five columns and as many rows as are implied by
the crossing of the two factors. Each row contains the mean in a
column with the name `yname`

and its factor values in columns
named with the name in `factor.names.keep`

. The standard deviation of
the observations in the group are in the column `"sd"`

and the number
of observations in the group is in the column `"nobs"`

.

##### See Also

*Documentation reproduced from package HH, version 3.1-39, License: GPL (>= 2)*

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