Question about Texas Instruments TI-89 Calculator

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I cannot figure out 'how to enter r2' on a TI calculator, after I enter the linear, quadratic, and exponential regression equations..........


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No need to enter R squared. If it has meaning it will display in the stats variables screen ( 2nd F7 ).
Hope it helps.

Posted on Sep 14, 2009

  • k24674 Sep 14, 2009

    For TI83/TI84 fanily of products.

    You obtain R squared with the command DiagnosticsOn.

    To do that use catalog of commands. [2nd][CAT] displays all availabe commands.

    [2nd][CAT to open Catalog. Then [ALPHA] D to jump to the first command in catalog that starts with letter D. Scroll down till you find DiagnosticOn. Press [ENTER] Command is displayed on home screen. To use it , press [ENTER]

    To summarize

    [2nd][CAT][Alpha][D] Arrow down, Arrow down ...[DiagnosticOn] [ENTER][ENTER]

    R squared will be displayed on the statistical result screen (regression equation, coefficients, etc.)



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