25 Stat summations

[Steve Simpkin]

(08-30-2022 05:48 AM)Matt Agajanian Wrote:  I would think that a better comparison would be between the 57 and an HP-33E/C. Both were available at around the same time.

True, the HP-33E added subroutines, linear regression/estimate, two-variable statistics and degrees/radians conversion. It still did not have program step labels or the ability to insert/delete program steps. Of course with only 49 steps and programming that disappeared when you turned off the power (33E), editing may not have been that important on these models. It would certainly become much more important on Continuous Memory models that had more memory.

Also keep in mind that the HP-33E/C models came about a year after the TI-57. When the TI-57 was introduced around May 1977, the HP-25 was its most direct competitor and it was this model that probably shaped the TI-57 feature set.