Question about Casio FX-115ES Scientific Calculator

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Posted on Jan 02, 2017

SOURCE: How do I find the correlation coefficient on my

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

SOURCE: how to calculate the coefficient of linear

Although the coefficient of correlation is well defined for a few regression models, you do not calculate it directly because your calculator does that for you.

I could just tell you that it is displayed along with the statistical results (equation of best fitting curve, ) but if you do not know how to do that you will just shoot my post. If you know how to do a linear regression, stop right here and ignore what follows.

For those interested: How to do a regression on the calculator

I am sorry but I will have to assume that you know how to enter the data through the [MENU][STAT].

- After you finish entering all the data
- Press [F1:Graph], select Gph1,
Gph2, or Gph3.
- Once the graph of the experimental data is drawn, you
will have access to the diverse regression models.
- Your choices are
- [X:Linear]
- [Med-Med],
- [Quadratic :X^2]
- [Cubic;X^3]
- [Quartic: X^4].
- Press [F6] to scroll right to access the others
- [Logarithmic:LOG],
- [Exponential :EXP],
- [Power :Pwr] and
- [Sinusoidal: Sin]

On that same screen, you have a menu option [F6:Draw]. If you select it, the regression curve will be drawn on the same screen as your statistical graph. This allows you to judge if the fit is good. If it is not, you have the option to choose another model.

The other option [F5:Copy] allows you to save the regression equation in the Y1, Y2, etc. variables.

Posted on Jan 03, 2010

How to Calculate Correlation dummies

http://www.mathsisfun.com/data/correlation.html

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.

http://www.mathsisfun.com/data/correlation.html

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.

May 30, 2017 | Miscellaneous

http://www.wikihow.com/Calculate-the-Product%E2%80%93moment-Correlation-Coefficient

Mar 17, 2015 | Texas Instruments TI-82 Calculator

May 02, 2012 | Casio FX-9750GPlus Calculator

You must turn the Diagnostics ON. Open the CATALOG of commands by pressing [2nd[0]. Press the key that has Letter D next to it. From that point in the catalog, scrool Down to get to DiagnosticsON. Highlight the command and press Enter. The calculator will echo the command in the Main screen. Press ENTER.

From now on the coefficient of determination ( the square of R) will be displayed along with other statistics.

From now on the coefficient of determination ( the square of R) will be displayed along with other statistics.

Feb 03, 2012 | Texas Instruments TI-84 Plus Calculator

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.

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.

Dec 13, 2009 | Texas Instruments TI-84 Plus Silver...

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.

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.

Oct 02, 2009 | Texas Instruments TI-84 Plus Calculator

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.

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.

Sep 26, 2009 | Casio CFX-9850G Plus Calculator

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!

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!

May 07, 2009 | Texas Instruments TI-30XA Calculator

Turn your "diagnostic on" from the catalog menu

May 04, 2009 | Texas Instruments TI-84 Plus Calculator

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

Dec 09, 2007 | Texas Instruments TI-36 X Solar Calculator

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