Question about Texas Instruments TI-84 Plus Calculator

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Linreg How to I enter linreg info on a TI-84 Plus SIlver?

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Enter your data into L1 as x-coordinates and L2 as y-coordinates at (STAT) + (EDIT) and then turn on your StatPlot. Finally, press (STAT) ->(CALC) -> (4)LinReg(ax+b) and (L1) (,) (L2) (Y1)
nb: Y1 could be find from (VARS) -> (Y-VARS)->(1:Function...)

Posted on Apr 30, 2008

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Ti 84 plus silver edition will not fit a linear model to plotted points. when I use the function vars>stat>EQ>RegEQ it transmits incomplete data in to Y=.


Your data must be in two lists L1 (for x-values), and L2 (for y-values). This is the default setting. Open the STAT utility, go to the regression models. Select your model then press ENTER. The command echoes on the main screen. For example let the regression be something called LinReg.
On the main screen you see LinReg
Complete the command line as follows
LinReg L1, L2, Y1, ENTER
You see the statistics including the regression equation.
If you go to Y= Editor you will see that Y1 contains the regression equation.
If you have already drawn the scatter plot for your data, pressing GRAPH will superpose the scatter plot and the regression curve., and you will be able to judge the goodness of the fit.

Sep 28, 2013 | Texas Instruments TI-84 Plus Silver...

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I;m trying to do lin reg and my TI-83 PLUS keeps saying ERR:DIM MISMATCH


LinReg uses two Lists, they must contain the same number of elements. If you are using LinReg with no arguments the Lists are L1 and L2.

Nov 02, 2010 | Texas Instruments TI-83 Plus Calculator

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My calculator will not show me rank correlation when I use STAT, CALC, LINREG or VARS, STATISTICS, EQ, R


Select DiagnosticOn from the catalog and execute it.

Press SHIFT [CATALOG] x^-1, use down-arrow to scroll down to "DiagnosticOn," then press ENTER twice.

Oct 25, 2010 | Texas Instruments TI-84 Plus Silver...

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How do u store linreg(ax+b)as y1 on ur graphic calculater


When you press [STAT] and right Arrow to highlight CALC you see two linear regression model [4:LinReg(ax+b)] and [8:LinReg(a +bx)]
If you select [4: ...] the command echoes on main calculator screen as LinReg(ax+b) and a blinking cursor
If you press [ENTER] you will get your equation, a, b, and r^2 if DiagnosticsOn command has been executed before. However you will not be able to see the line of best fit on top of the raw data scatter plot.

To save the equation of best fit in a function variable, ex Y1, you complete the command as follows
LinReg(ax+b) [VARS][=>][Y-VARS][1:Function][1:Y1]
The Y1 variable will appear on main calculator screen, and you have
LinReg(ax+b) Y1
Press [ENTER]
Screen display the equation, its parameter and its correlation coefficients (if so configured).
Press [GRAPH] to draw the line of best fit on top of the scatter plot.

Here are two screen captures to show you the equation and the line of best fit.
a696143.jpg 754dc8f.jpg

As you can see from the value of r^2, and the graph, a linear regression does not seem good.

Feb 01, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

TI-84 Plus Linear Regression (ax+b) ERR:DIM MISMATCH


Hello,
Some old configuration settings, or old variables are spoiling your fun. Clear the RAM and start again.
Hope it helps.

Sep 28, 2009 | Texas Instruments TI-84 Plus Calculator

1 Answer

My TI-84 Silver is in a strange mode


Hi,
If you want to get that Shades, Poi-Trace,? out of it, you have press you apps button. Then you go to 7: Inequalz and pres 2 for quit Inequalz.

Bye

Jul 13, 2009 | Texas Instruments TI-84 Plus Calculator

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LinReg gives wrong results


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

May 09, 2008 | Texas Instruments TI-84 Plus Silver...

3 Answers

LinReg (ax+b)


just press (2nd) + (MEM)+(7) + (1)+ (2) and then try again.;)

Apr 23, 2008 | Texas Instruments TI-84 Plus Calculator

3 Answers

Line Regression


Hey I had this SAME PROBLEM!! Okay, here's the solution that FINALLY worked for me:

  1. Go to STAT PLOT (2nd, then Y=)
  2. Press "4" (PlotsOff)
  3. Press the ENTER button (it should say "Done" on th second line)
  4. Continue Graphing
I sincerely hope this tip helps!

Oct 25, 2007 | Texas Instruments TI-84 Plus Silver...

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