ANOVA: How many groups? Size of largest group?

You are about to enter your data for a ANalysis Of VAriance. For this to make sense you should have several groups of data (at least 3; maximum: 26).
Number of groups:

Each group includes a certain number of data items. (Often all the groups have the same number of items, but that is not required.) What is the size (i.e., the number of items) of largest group? (maximum: 99)
Size of largest group:

There is no harm is over estimating the group size: blanks will be ignored. You do need to correctly enter the number of groups.

For ANOVA with a error-bar plot click here.