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How do I find the correlation coefficient on my calculator?

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  • Casio Master
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Hello,
You will find it on the same screen where you find the regression equation, the regression coefficients etc. However it is not defined for certain types of regressions.
Hope it helps.

Posted on Sep 26, 2009

  • k24674 Feb 19, 2010

    I do not think you understood what I said. Although there is a formula that defines the correlation coefficient (for certain regression models only) it is not meant to be calculated by hand. You can always try.
    Normally, if the correlation coefficient has a meaning for your regression model, it will automatically be calculated by the calculator along with the other regression parameters, and it will be displayed on the same screen (you may have to scroll down to reach it) where the regression equation is displayed.
    Usually, people ask for the regression equation, not the correleation coefficient (an advanced topic). When someone asks for the correlation coefficient I assume that the asker already knows how and where to find the regression equation.

    If you know how to perform a regression (linear) do it and the correlation coefficient will be displayed along with the a, and b parameters.
    If you do not know how to perform a regression analysis, search this web site with a question such as How to do a regression analysis? I am sur you will find a post. I have already answered such question, several times, but I do not feel like searching through more than 200 pages of post to get you a link. The answer is here and you have to spend sometime looking for it.

    Next time, if an answer does not solve your problem, do not just be trigger happy and shoot the post, rather post a comment and somebody will help you.



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Posted on Jan 02, 2017

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SOURCE: how to calculate the Linear correlation coefficient

go to [2nd] [0] then select [diagnosticon] and click [ENTER] then it atomatically adds it to the LinReg(ax+b)

Posted on Jan 21, 2008

  • 3 Answers

SOURCE: correlation coefficient- how to compute

Turn your "diagnostic on" from the catalog menu

Posted on May 07, 2009

  • 1 Answer

SOURCE: need help to calculate correlation coefficient

Hi,

I don't know if you still need help with this problem but in case you do follow this link:
http://www.mathstore.net/graphing-calculators/TI-calculators/how-to-calculate-the-correlation-coefficient.php

Good luck!

Posted on Jun 15, 2009

  • 7993 Answers

SOURCE: Correlation coefficient of sine regression?

Hello,
The correlation coefficient does not have meaning (is not defined) for most regression models. Check you theory to make sure it exits for the sine regression.
An easy way to verify that, is to use the Command DiagnosticOn, accessible through the catalog [2nd][0] (CATALOG) . Press [X^-1] (D) to jump to first command that starts with D. Scroll down to DiagnosticOn, select it and press [ENTER]. Calculator replies Done.

Do your sine regression again. If the correlation coefficient has meaning for this type of regression, you will find it with the other statistical variables. You may have to scroll down the statistical variable list to verify the whole contents of the list.

Hope it helps.
Thank you for rating the solution.

Posted on Dec 15, 2009

  • 7993 Answers

SOURCE: My calculator is not showing

Press [2nd][0] to access the CATALOG. Use down arrow to move down the catalog index. You should look for the Command DiagnosticsON. Highlight it and press [ENTER]. When you go back to perform statistical calculations the R and R^2 will be displayed on the same screen where you get the regression equation. (Note: This coefficient is not defined for all the types of regression models. For some it means something and for others it doesn't. If it has meaning for the model it will be displayed).

Posted on Sep 19, 2010

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The first link is to one of the playfully titlted, famous Dummies series, texts generally noted for clarity. It describes the steps. The second link graphically displays what the concept of correlation is about. If the steps are not clear, you should visit other educational sites which may have descriptions of the use of this within the context of a particular scientific field. There are websites which calculate coefficients in the way a pocket calculator would.

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To get the correlation coefficient, open the CATALOG by pressing [2nd] 0 (CATALOG)
Press the [x-1] key for the letter D
Scroll down from the cursor position to reach DiagnosticsON.
Highlight the command and press EXE.

Use the statistic utility
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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.
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8_1_2011_10_38_52_am.jpg
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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

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1 Answer

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You can get the correlation coefficient by using the 2ND STAT key and entering data as shown and then a results screen is shown which should contain what you want.
http://education.ti.com/downloads/guidebooks/scientific/34ii/34iiqrg-eng.pdf

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1 Answer

Correlation coefficient of sine regression?


Hello,
The correlation coefficient does not have meaning (is not defined) for most regression models. Check you theory to make sure it exits for the sine regression.
An easy way to verify that, is to use the Command DiagnosticOn, accessible through the catalog [2nd][0] (CATALOG) . Press [X^-1] (D) to jump to first command that starts with D. Scroll down to DiagnosticOn, select it and press [ENTER]. Calculator replies Done.

Do your sine regression again. If the correlation coefficient has meaning for this type of regression, you will find it with the other statistical variables. You may have to scroll down the statistical variable list to verify the whole contents of the list.

Hope it helps.
Thank you for rating the solution.

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I am not able to do some functions on my TI-84 Plus calculator, such as: coefficient correlations. I was told I may need to reset my calculator. How do I do that?


To have the coefficient correlation show up when you calculate a regression, you must first turn diagnostics on.

The way to do this is press 2nd then zero. You are now in the catalog. Go to the d's in the alaphbetic list, highlight "diagnostic on" and press enter. You will be taken back to the home screen press enter and you get the word "done". The diagnostic is not on unless you get the word "done".

Now when you calculate a regression, the correlation coefficient will show up. It is designated as r = on the home screen.

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Turn your "diagnostic on" from the catalog menu

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go to [2nd] [0] then select [diagnosticon] and click [ENTER] then it atomatically adds it to the LinReg(ax+b)

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