Thanks! That obviously works, but I would hate to use something without knowing how it actually works. Do you know the corresponding formula or procedure to actually calculate it by hand, if it were necessary?
I was wondering, is there a formula that converts a given z-score to its respective percentile rank? I know I can look up the conversion in a table, but I have a lot of data, and would rather just program a formula into Excel. Obviously, there is some sort of way that whoever created the table...