Summary: A very detailed calculator. The one I purchased on Ebay didn't come with a manuel, so without the instruction of the Stat teacher, I would have no idea how to work the thing. It seems like most of the functions could be done with an app, but the teacher insisted that we purchase this calculator.
Summary: I purchased this item for my statistics at the suggestion of a classmate. Perhaps I have a defected product, but I seem to encounter more error messages than the solutions to problems. Very disappointed.