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Error domain exponential regression - Texas Instruments TI-84 Plus Calculator

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Posted on Jan 02, 2017

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SOURCE: Domain error

I changed the mode and that solved the problem.

Posted on Apr 03, 2008

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SOURCE: "domain error" message on ti-89 titanium

I had the same problem, this worked for me:

Mode -> page 2 -> Exact/Approx change from "Exact" -> "Auto"


Posted on Aug 28, 2008

  • 7993 Answers

SOURCE: How to find the best fit for exponential decay?

The error comes from the vanishing values at the tail of the function. The exponential function does not vanish except for -infinity. Truncate the lists by removing the pairs (5,00 and (6,0) or fudge up the data (5, 1E-5) (6,1E-6) and you will get your equation of best fit.

I am including a link to a post of mine where I show how to perform an exponential regression. JUST IN CASE you need additional information on the subject.

Posted on Apr 14, 2010

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SOURCE: I would really appreciate it

The ExpReg command is in the MATH/Statistics/Regression menu. The first two arguments are lists containing the x and y values. An optional third argument is a frequency list. Two additional optional arguments are lists of category codes and a category include list.

Full details are in the manual under ExpReg, page 819 in the version available at
http://education.ti.com/calculators/downloads/US/Guidebooks/Detail?id=6128

Posted on Mar 01, 2011

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1 Answer

What is wrong with my calculator? invNorm Error:Domain


DOMAIN ERROR:

- You specified an argument to a function or
instruction outside the valid range. This error is
not returned during graphing. The TI-84 Plus
allows for undefined values on a graph.

- You attempted a logarithmic or power
regression with a LX or an exponential or power
regression with a LY.

- You attempted to compute GPrn( or GInt( with
pmt2 < pmt1.

Mar 16, 2015 | Texas Instruments TI-84 Plus Calculator

1 Answer

How to do a quadratic regression?


I am sorry to say that natively the HP 49G+ does not perform quadratic regressions. The models that are vailable are Linear fit, logarithmic fit, exponential fit, power fit, and best fit.
These options are available under Right SHIFT (Orange) 5 (STAT)>3:Fit data.

Feb 25, 2012 | HP 49g+ Calculator

1 Answer

I am trying to enter a exp to an complex number and am getting a domain error. How do I clear it up


At first, you can enter a complex number in r*exp(i*theta ) form. This is exponential form of complex number. However, use this form in Radian angle mode only. It causes a Domain error in Degree or Gradian angle mode. To resolving this problem type Mode then F1 and set up Radian mode

Jan 23, 2012 | Texas Instruments TI-89 Calculator

1 Answer

Am trying to calculate corelation on a Casio fx-9750GII,


Press Menu.
Use arrows to highlight STAT icon and press EXE.
Enter your data in two lists (x-values in L1, Y-values in L2)
Press F2 to activate the CALC Tab at the bottom of screen.

8_1_2011_10_31_34_am.jpg
This is what you see.

8_1_2011_10_35_06_am.jpg
Press F3 to activate the REGression tab.
This is what you will see: the TABs at the bottom of screen.
Each tab corresponds to a regression model: X-linear, X2 quadratic, etc.
8_1_2011_10_38_52_am.jpg
If you press F3:X^2, you get the following
8_1_2011_10_36_07_am.jpg
You see the parameters of the regression equation, the coefficient of determination r^2, and the Mean Square error. No correlation coefficient is defined for this regression model.
For other models like linear, logarithmic, power and exponential regressions, the correlation coefficient is defined and is thus displayed with the regression equation. It is the r-value.

8_1_2011_10_44_16_am.jpg

Jul 31, 2011 | Casio FX-9750GPlus Calculator

1 Answer

When I attempt to use hyperbolic functions for complex numbers i get a domain error


Have you checked the calculator's manual to see if the calculator is able (natively) to handle functions of a complex argument. It is able to handle simple algebra with complex numbers, powers, roots, solving a polynomial equation.
For this calculator, the hyperbolic functions must have a real argument otherwise you get a error. But just to make sure, try the exponential function with i (imaginary unit) as argument. If it comes back with a domain error you have your answer.

Apr 06, 2011 | Texas Instruments TI-89 Calculator

1 Answer

How to find the best fit for exponential decay?


The error comes from the vanishing values at the tail of the function. The exponential function does not vanish except for -infinity. Truncate the lists by removing the pairs (5,00 and (6,0) or fudge up the data (5, 1E-5) (6,1E-6) and you will get your equation of best fit.

I am including a link to a post of mine where I show how to perform an exponential regression. JUST IN CASE you need additional information on the subject.

Apr 14, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

How do I run a regression analysis in Excel


You probably want to use the LINEST function for straight lines or LOGEST for exponential curves.

In Excel 2007, there are a few tricks. One is to select a range of cells and enter your formula there. If you do not select a range of cells all the variables (coefficentis, R2, errors, etc) will not be dislayed.

The other tricks is one must hit Ctrl+Shift+Enter to display the results.

http://support.microsoft.com/kb/828533 is a link from Microsoft with a detailed explaination. Happy OLS regressing!

kpenguin

May 13, 2008 | Microsoft Excel for PC

1 Answer

"domain error" message on ti-89 titanium


I had the same problem, this worked for me:

Mode -> page 2 -> Exact/Approx change from "Exact" -> "Auto"


May 12, 2008 | Texas Instruments TI-89 Calculator

4 Answers

Domain error


It's the "Exact/Approx" setting under the [MODE] key. I used to have it on "Exact" and got the domain error issue, but then changed it to "Auto" and it works. IMO, this is a really weird quirk that TI should have ironed out before releasing the TI-89.

Apr 02, 2008 | Texas Instruments TI-89 Calculator

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