Texas Instruments TI-83 Manual Book page 358

Note: To set
DiagnosticOn
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
when you execute a regression model.
When
DiagnosticOff
when you execute a regression model.
TI-83 Plus Statistics
or
DiagnosticOff
is set, diagnostics are displayed with the results
is set, diagnostics are not displayed with the results
from the home screen, press y
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