HP50G and built-in variable sigmaDAT

[Dave Britten]

Isn't that SigmaPAR rather than SigmaDAT? SigmaDAT would be the matrix with your data in it.

Anyway, I'm assuming they simply didn't update the stat operations to handle ints, since you mostly manipulate SigmaPAR with various menus, and modifying SigmaPAR yourself is left for advanced users/programmers that should know better. The commands probably just check for real list elements and bail when they see a type mismatch.