Hi,

I am trying to input data into Statgraphics and find the multiple regression. When I choose a column to use as either "y" or "x" it tells me it has to be a numeric value. Can anyone help?

Thanks!

Double-click on the column heading (grey) and you will open the Modify Column dialog, where you can change the variable type.

I have repeatedly had problems running multifactor anova on full-factorial-design experiments. I get this error message:

ERROR: factor AB is a linear combination of other factors.

Anyone have a solution to this?

Many thanks,
Gary