HP 48G Linear Regression Best Fit Line

[MNH]

(12-25-2021 02:41 AM)Rodger Rosenbaum Wrote:  

(12-25-2021 02:26 AM)MNH Wrote:  How can I store my own data into the summary statistics variables?

As I mentioned earlier, executing LR does the job. Why would you want to do it yourself?

There is a substantial advantage to letting the HP48 do it. When the HP48 does it, the calculations are done using the internal 15 digit arithmetic. If you do it yourself, you will be doing it with 12 digit arithmetic (if you do the calculations on the HP48) and lose substantial accuracy.

When I execute LR, I get the y-intercept and slope values on the stack. Don't you mean Fit data..., Linear Fit, [OK]? What if I could write a program that would do that automatically? I'm simply thinking about writing a more user-friendly program. Nothing wrong with that, right? I am curious about the summary statistics variables. Where do they reside in calculator memory?