Summary: I have used these since the original "48G" came out. I bought this for a family member since I have had such great performance out of my original model. This is a LOT of graphing power for the buck. Since 1974 I have owned many different HP calculators. Not one of them has ever let me down.
A very valuable instrument at an extremely reasonable price.
thomas McHugh, Amazon
5 January 2013
Summary: I have been trying to teach myself business statistics with textbooks purchased through Amazon. This wonderful instrument not only simplifies and streamlines computations, but also helps me organize my thoughts. The sole fly in the ointment is the digital user manual.