Covers isn't great because it does not give you the yellow arrow option next to the table with the data. Some of the other sites mentioned like statfox work pretty well. It shouldn't really matter though. The way I do it, I always import the data into a different sheet than the ones I display all my results in. For example, your spreadsheet could have three sheets in it (three seperate tabs at the bottom). One called Data. This is where you import the raw data. Another called Calcs. This is where you do all the heavy lifting with your calculations. And then a third caller Summary. This is where you display your results with all the pretty bells and whistles.