Howdy.

I have a 42S (won it at an engineering frat rush party in '91!) I haven't used in ages and have long since lost the manual. It seems you can't find a manual online anymore, and can't buy it either. Sad.

Well, right now I simply want to use the MEAN and SDEV operations but have absolutely no clue as to how to use them. I have been tinkering with it for a couple days now and its not obvious to me. I have 3 numbers: how do I get them entered and get the mean of them? Ditto for stadnard deviation.

If some kind soul could answer me this I would be very happy. The rest I will have to figure out by playing with it.

Thanks!