Technology Appendix - McGraw-Hill Ryerson

Function or TaskLinReg functionLinReg(ax+b) Xlist, Ylist,FunctionKeystroke(s), Menu, or ScreenYou can use linear regression if it looks like your scatter plotresembles a linear function.Example1:Clear all functions under Y=. Clear all lists. Turn off all plotsexcept Plot1. Ensure that you are set for a scatterplot, thatXlist is L1 and that Ylist is L2.Enter the integers 0, 1, 2, 3, 4 into L1.Enter the numbers 1.2, 4.3, 6.5, 10.8 and 12.5 into L2.Press ZOOM and select 9:ZoomStat to fit the axes to thedata.Press STAT and select the CALC menu.Select 4:LinReg(ax+b) and type L1 , L2 , Y 1 .Press ENTER. The equation generated is y = 3x + 1.Press GRAPH. Your screen will look like this:If you press Y=, you will see the equation generated by thecalculator.Top MenuMHR • Mathematics of Data Management Appendix B (Revised 2010) Page 18 of 129