Texas Instruments TI-84 - Manual (Page 308)

Chapter 12: Statistics 305
By default, these values are not displayed with the results of a regression model when
you execute it. However, you can set the diagnostics display mode by executing the
DiagnosticOn or DiagnosticOff instruction. Each instruction is in the CATALOG
(Chapter 15).
Note: To set DiagnosticOn or DiagnosticOff from the home screen, press
y N,
and then select the instruction for the mode you want. The instruction is pasted to the
home screen. Press
Í to set the mode.
When DiagnosticOn is set, diagnostics are displayed with the results when you execute a
regression model.
When DiagnosticOff is set, diagnostics are not displayed with the results when you
execute a regression model.