Question about Texas Instruments TI-84 Plus Silver Edition Graphic Calculator

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LinReg gives wrong results

I teach high school physics, and students are graping and conducting a LinReg for a set of data stored in lists (e.g. LinReg L3, L2, Y1).

No problem with this, it works great, but one student was getting different values for a, b, r2, r. I checked her lists, and they were all correct. I even tried re-entering all the data, but still got the same results.

I finally cleared the RAM ([MEM] RESET ... All RAM, and now we are getting the right answer.

Any ideas of what might have been wrong?

Thanks.

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  • Lee Trampleasure May 09, 2008

    PS. This was on a TI 84 Silver Edition, but the students who were getting the right answers were using a variety of 83/84s.

  • Laceynicole Feb 21, 2009

    I have similar problem, except now I reset it and the r and r2 are gone!!!

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  • 21 Answers

Probly because the calc was miscalibrated or someone screwed around with the variables...
hope this helps

Posted on Jun 11, 2008

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