# sufficient

From HH v3.1-8
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 3.1-8, License: GPL (>= 2)*

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