Running total column and RSQ
1) is it possible to create a column in a dataset that is a running total of another column. ie in excel the column cells would be B2=B1+A2 and B3=B2+A3 .... etc etc
2) Is it possible to get the RSQ ( fitness to line ) value for a column.
Both of these are fairly simple in Excel, but I am having trouble doing them within Rapidminer.
Thank you in advance