mtarler ...thanks. Yeah, you are probably right. And, my application(s) for my outlier and anomaly detection stuff are more one time or very infrequent runs customized to very unique and different looking datasets. That's why I am staying in the VBA world for now because I always must do a lot of data shaping and, in the end, for each individual project, the data might look very, very different. And, in my case, likely reporting would be, at the most, a monthly basis, but, more likely one or two time deep dives on several columns of data (we're talking thousands of columns, not just a few) at one time automatically looking for outliers and anomalies. And, I don't want any formulas at all in the spreadsheet.....just the outputs (numbers).....because Web or Desktop versions, 8000 columns of data by 1000 rows of data means a spreadsheet with 8000*1000 cells with formulas AND data (if I use LAMDA) in them....opening up extra possibility of errors and taking up more computing space and capacity than necessary. Thanks for input though.