Using your TI-84 Calculator, compute the Correlation Coefficient as described below.
1) Press 2ND 0 (which opens your Catalog), next scroll down and click DIAGNOSTIC ON as shown below in
2) Now enter the x-y List under STAT -> Edit .
Enter at least 2 pairs of x-y data to find the Correlation Coefficient on Calculator
3) Next, press STAT -> Calc -> LinReg(ax+b), select CALCULATE and Press ENTER to find the Correlation Coefficient r on the TI-84 Calculator
Voila, the Correlation Coefficient is displayed behind the letter r. r^2 is called the Coefficient of Determination.
Remember that a Correlation Coefficient r=1 means that your Regression Line passes through the given x-y data with a positive slope.
Conversely, r=-1 means that your Regression Line passes through the given x-y data with a negative slope.
Finally, r=0 means that there is no correlation between the given x-y data, just wildly scattered without pattern.
Contact us should you have questions how to do Correlation Coefficient on Calculators. It is fun and not difficult.
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