John Wiley & Sons TI-83 User Manual download pdf (Page 79)

Press the STAT key.

Press the number 1 key.

Type the English scores in L1

Type the Math scores in L2.

Press the 2

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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John Wiley & Sons TI-83 User Manual Page 79