This is also the same place on the calculator where you will find the linear regression equation, and the coefficient of determination. Remember, if r doesn’t show on your calculator, then diagnostics need to be turned on. That’s it! You’re are done! Now you can simply read off the correlation coefficient right from the screen (its r). Finally, select 4:LinReg and press enter. Once you have your data in, you will now go to and then the CALC menu up top. ![]() To make things easier, you should enter all of your “x data” into L1 and all of your “y data” into L2. Step 2: Enter DataĮnter your data into the calculator by pressing and then selecting 1:Edit. This is important to repeat: You never have to do this again unless you reset your calculator or start using someone elses! This will be set up from now on. Press enter until the calculator screen says “Done”. Press and then to enter your calculator’s catalog. If you don’t do this, r will not show up when you run the linear regression function. After that, you can always start at step 1 below. You will only need to do this step once on your calculator. (For a video that shows all of these steps, be sure to scroll down!) Step 0: Turn on Diagnostics It is a VERY easy process an here, I will go through each of the steps needed. They interpret the results from software or other calculators.įor most students, the easiest way to calculate the correlation coefficient is to use their graphing calculator. The only problem is that it is quite messy and tedious to find by hand! And as I have mentioned many times before: statisticians do not find these things by hand. Please see the TI-84 Plus Family guidebooks for additional information.The correlation coefficient is very useful for understanding how strong the linear relationship is between two variables. ![]() Press to calculate the y-hat values which will be displayed in 元. Press, arrow right to highlight Y-VARS and press to select the Y1 function.Scroll over to 元, scroll up to highlight 元 and press to input a formula for the 元 list.The regression equation will also be stored to Y1. The linear regression data will be displayed.Arrow right to highlight Y-VARS and press to select the Y1 function. ![]()
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