Pearson's r and coefficient of determination

If any one comes on who can answer this question i would be very grateful.
Shoni has such beautiful manners and I can't answer her question.
Sorry Shoni.

Shoni:

This is my first time using a web calculator. Can someone please provide me with instructions on how to calculate the Pearson's r and coefficient of determination using a web calculator.
Thank you

I am really sorry but I don't think that you are going to get an answer here in any hurry.
We actually run this site quite separately to the rest of the web2 site and the only one who has any knowledge of the calculator doesn't seem to be around.
I suggest you post your question here
http://mathhelpboards.com/potw/
or
http://mathhelpforum.com/

I use the second one (because that if the one I found first and i know people in there), but I am told that the first one is better organised which could easily be true.
Anyway, I think you will find either or both very helpful. This forum is mainly for less advanced students.
Sorry that I couldn't be of more help.

Shoni wrote: This is my first time using a web calculator. Can someone please provide me with instructions on how to calculate the Pearson's r and coefficient of determination using a web calculator.
Thank you

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For clarification: Pearson's r, is the coefficient and it's value determines the nature of the data (described below).

The web2.0calc.com calculator has many advanced functions, but statistics is not one of them. Basically, just Permutation and Commutation (called "Binomial coefficient" for this calculator) are the only two directly input able functions for statisticals -- This calculator does not have a Sigma (summation) function or any regressions functions.

While performing statistical calculations on a calculator is possible, it is a very labor intensive and error-prone process. It's analogous to filling a swimming pool with an teaspoon. (A calculator is better than a slide-rule, however). Statistical calculations are best served via a computer more than a calculator.

If you want a very advanced statistical analysis program, "Statistical -R" (the latest version 3.0.2 is available here: www.r-project.org) is a free software programming language for statistical computing and graphics. The program is developed by and for statisticians,mathematicians. It is truly amazing!

Pearson's r, coefficient is basically a least squares slope intercept through data points (X _i,Y _i). The resolved value is from -1 to +1 and indicates correlation of X to Y. The current recommended use for the Pearson product-moment correlation coefficient, the original name of the 130 years-old formula, is on data that is only distributed normally, with minimum of 30 data pairs, and with less than 5% of the data more than one Standard deviation out, and no data points more than 2SDVs out. It is a simple process and there are two methods use to calculate it's value.

For an online calculation, the site listed below should suffice. I don't know how many data pairs you can enter, but it should be at least 30, else the results are unreliable.

www.socscistatistics.com/tests/pearson/Default2.aspx

This ends the editorial and commentary -- I hope it helps.

~~D~~