Shareware/freeware mentioned in this article

NORMDIST.WK1 Lotus 1-2-3 spreadsheet with table of normal curve areas. Freeware. Available on this issue of The HP Palmtop Paper ON DISK.

ND-INTEG.WK1 Lotus 1-2-3 spreadsheet with numeric integration macro modeled on HP Solve s SIGMA() function. Freeware. Available on this issue of The HP Palmtop Paper ON DISK.