# Number of Bins for Dose Group

Use this option to specify the number of bins into which the subjects receiving different treatment dosages, as reported in the EXDOSE variable in the ex.sas7bdat data set, are to be grouped.

Binning the dosage groups reduces the number of groups to be plotted on a graph and facilitates visual inspection of the results. This option is useful when the number of dosage groups is very large.

Dosage groups are generally equally divided among the bins, although in some cases, certain bins can contain more groups. Groups are never divided among different bins.

For example, if you bin 10 dosage groups into 5 bins, each bin would contain 2 groups. However, if you bin the same 10 groups into 3 bins, 2 bins would each contain 3 groups, while the third bin would contain 4 groups.

### To Specify the Number of Bins:

| 8 | Either enter the desired value in the text field or move the slider to the right or to the left to change the value.

Tip: To change the scale of the slider, right-click on the slider and select
from the pop-up menu. Change the upper or lower boundaries in the that appears, to rescale the slider and click
.

| 8 | To prevent binning, set the number of bins to a value exceeding the number of dosage groups.