`UtilMeanSquares.Rd`

Calculates the mean squares used in the DBM and ORH methods for factorial dataset

`UtilMeanSquares(dataset, FOM = "Wilcoxon", FPFValue = 0.2, method = "DBM")`

- dataset
The dataset to be analyzed, see

`RJafroc-package`

.- FOM
The figure of merit to be used in the calculation. The default is

`"FOM_wAFROC"`

. See`UtilFigureOfMerit`

.- FPFValue
Only needed for

`LROC`

data**and**FOM = "PCL" or "ALROC"; where to evaluate a partial curve based figure of merit. The default is 0.2.- method
The method, in which the mean squares are calculated. The two valid choices are

`"DBM"`

(default) and`"OR"`

.

A list containing the mean squares

For `DBM`

method, `msT, msTR, msTC, msTRC`

will not be available
if the dataset contains only one modality (NAs are returned). Similarly,
`msR, msTR, msRC, msTRC`

NAs are returned for single reader dataset.
For `ORH`

method, `msT, msR, msTR`

will be returned for multiple
reader multiple modality dataset. `msT`

is not available for single
modality dataset and `msR`

is not available for single reader dataset.

```
result <- UtilMeanSquares(dataset02, FOM = "Wilcoxon")
result <- UtilMeanSquares(dataset05, FOM = "wAFROC", method = "OR")
```