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Press the STAT key.
Press the number 1 key.
Type the English scores in L1
Type the Math scores in L2.
Press the 2
nd
key and then the Y= key to get to STATPLOT.
Press the number 1 key.
Turn Plot1 On and highlight the scatterplot under Type.
Type L1 in for the Xlist:
Type L2 for the Ylist:
Select any one of the symbols Mark:
Press the Zoom Key.
Press the number 9 key to get to ZoomStat.
If you would like to see the coordinates of the marks,
press the TRACE key.
Note: if any equations are stored on the Y = page, they may also appear in your diagram. Delete
them if they are in the way.
Creating a Linear Regression Model
The TI-83, TI-83 Plus, and the TI-84 Plus calculators have the function LinReg on the STAT
page in the CALC list and will compute a simple linear regression model. Note there are two
forms, one that writes the equation as ax+b and the other that writes the equation as a+bx. We
will use the latter form. We will also use the English and Math scores from the previous
example that are stored in lists L1 and L2.
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