Has anyone had a go at trying to implement the 1-variable weighted function that is part of the Statistical Suite available on the HP20b. Apart from a brief cursory mention in HP's official manual for this calculator there is no example or explanation of what this function does or how to implement it. I presume it helps one to determine the expected value of a random variable by inputting random variable outcomes into the X: register and their associated probabilities in the Y: register but I cannot seem to get any results. If anyone knows how this function operates I would appreciate some assistance or guidance.

Cheers and have a nice day,

Ric