Hello everyone, I was wondering what software you all find useful for analyzing data. What I'm looking for needs to have extensive curve fitting abilities as well as error analysis tools, i.e., error bars and what not. I hope this isn't totally vague and you all have a piece of software in mind. I should mention this is for one of the upper division physics labs at my university. We are pretty much left to our own devices in writing up a manuscript and presenting data. Many Thanks, Eric P.S. I think we have Kaleidograph on the computers in the physics computer lab. Any thoughts on that one?