Hi, Jac;

in your table, we can see:

Return Probability
10% 0.2

14% 0.1

15% 0.3

16% 0.2

17% 0.2

(I restored the original format)

The best way to analyze statistics (at least I consider it so) is by performing statistic functions after entering data with [SIGMA+]. [SIGMA+] is a standard function that collects n-column, single row vectors in Level 1 (RPN entry) in order to compose statistical data. This way, matrix (SIGMA)DAT is generated (something like):

[ [ 10% 0.2 ]

[ 14% 0.1 ]

[ 15% 0.3 ]

[ 16% 0.2 ]

[ 17% 0.2 ]]

After that, performing MEAN returns a single row matrix with the mean for each column. The HP28/48/49/50 series allow a n-th column matrix as data for statistics computations, and some functions apply to all columns, like MEAN and SDEV (Standard Deviation). Other functions/commands (like forecasting) need the target columns to be selected prior to execution (default goes to first and second columns).

Hope this helps (and hope my answer is accurate; I have not a single manual nor a calculator to check names and procedures, though...)

Cheers.

Luiz (Brazil)

*Edited: 5 Sept 2006, 2:03 p.m. *