I just finished my Data Analytics class and we used Palisade's Stattools. It's butt-fuck expensive, but students who have the accompanying book can download it for free, after a very...honor system type of verification check. It is very intuitive and generates a lot of work. We used it to do everything from predictive modeling, to multiple regressions, to generating P-Value charts and all sorts of wacky shit that is great for both statistical analysis, business data analysis, and hypothesis testing.
StatTools: Forecasting and Statistical Analysis Software for Excel - Palisade
It's very expensive, but if you buy the book and are a student you can get the program for free for 2 years. All you have to do is register, give your class information, and AHEM AHEM pass the word-on-the-page type test to see if you have the book. I still have my book, not that you would
ask me to give you the word for the check because that would be dishonorable and totally immoral. I mean, all you would have to do is ask and I would give that word, but, this is hypothetical and not at all moral and no one here is any of those things.