Presentation on theme: "TI Calculator Creating a Scatterplot … Step #1 – Enter the Data"— Presentation transcript:
1 TI Calculator Creating a Scatterplot … Step #1 – Enter the Data STAT1 (Edit)To clear the lists …press up arrow,CLEAR, andENTEREnter your data into the ListsImportant:Must have same number of items in each list!
2 TI Calculator Step #2 - Display the Graph 2nd Y= Turn Plot 1 ON Possible Source of Errors:Mismatched DataL1 and L2 not showingOther StatPlots are ONStep #2 - Display the Graph2ndY=Turn Plot 1 ON1EnterMake sure it shows L1 and L2Make sure all other plots are OFF (2nd, Y=)GRAPHZOOM, 9 automatically adjusts the window to fit the data entered into the Lists
3 TI Calculator LinReg(ax+b) L1, L2, Y1 Step #3 - Getting the Line of Best FitSTAT (right arrow – over to CALC)4 (LinReg)2nd, 1 (will show L1),2nd, 2 (will show L2)VARS (right arrow – over to Y-VARS)1 (Function)1 (Y1)ENTERPossible Source of Errors:Could be missing commas.Whole command should be the only thing on the line (on the calculator).LinReg(ax+b) L1, L2, Y1
4 T1 CalculatorThis gives you the equation of the line of best fit and stores it in Y1y = ax + ba =b = 62.75r2 =r =If you don’t get the r values:2ndScroll Down to Diagnostic OnENTERy = xPress GRAPH to see the scatterplot with the line of best fit!