Question: how to find correlation coefficient r on ti-83?
Answer: Step 0: Turn on Diagnostics. You will only need to do this step once on your calculator. ... 
Step 2: Enter Data. Enter your data into the calculator by pressing [STAT] and then selecting 1:Edit. ... 
Step 3: Calculate! Once you have your data in, you will now go to [STAT] and then the CALC menu up top.