1. Using the TI-83/84

2. Summary Stats from the TI-83/84
Press STAT, Enter (for EDIT)
If there are old data under L1:
Press the up arrow, then CLEAR, ENTER
Enter data values in L1 one at a time, pressing ENTER after each.
If you make an error, use the up or down arrows to highlight the error, then enter the correct value. Use the arrows to get to the bottom of the list for the next value, if necessary.
Be sure to press ENTER after the last data value.

3. Summary Stats from the TI-83/84
Press STAT, Right Arrow (for CALC), ENTER
Press ENTER (for 1-Var Stats)
Press ENTER again
Read results
The Standard Deviation is labeled Sx

4. Calculating r with the TI-83/84
The first time you do this:
Press 2nd, CATALOG (above 0)
Scroll down to DiagnosticOn
Press ENTER, ENTER
Read “Done”
Your calculator will remember this setting even when turned off

5. Calculating r with the TI-83/84
Press STAT, ENTER
If there are old values in L1:
Highlight L1, press CLEAR, then ENTER
If there are old values in L2:
Highlight L2, press CLEAR, then ENTER
Enter predictor (x) values in L1
Enter response (y) values in L2
Pairs must line up
There must be the same number of predictor and response values

6. Calculating r with the TI-83/84
Press STAT, > (to CALC)
Scroll down to LinReg(ax+b), press ENTER, ENTER
Read r at bottom of screen