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Published byNicholas Miles Modified over 2 years ago

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TI Calculator Creating a Scatterplot … Step #1 – Enter the Data –STAT –1 (Edit) –To clear the lists … press up arrow, CLEAR, and ENTER –Enter your data into the Lists Important: Must have same number of items in each list!

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TI Calculator Step #2 - Display the Graph –2 nd –Y= –Turn Plot 1 ON 1 Enter –Make sure it shows L1 and L2 –Make sure all other plots are OFF (2 nd, Y=) –GRAPH –ZOOM, 9 automatically adjusts the window to fit the data entered into the Lists Possible Source of Errors: -Mismatched Data -L1 and L2 not showing -Other StatPlots are ON

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TI Calculator Step #3 - Getting the Line of Best Fit –STAT – (right arrow – over to CALC) –4 (LinReg) –2 nd, 1 (will show L1) –,–, –2 nd, 2 (will show L2) –,–, –VARS – (right arrow – over to Y-VARS) –1 (Function) –1 (Y1) –ENTER Possible 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

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T1 Calculator This gives you the equation of the line of best fit and stores it in Y1 y = ax + b a = b = r 2 = r = y = x If you dont get the r values: 2 nd 0 Scroll Down to Diagnostic On ENTER Press GRAPH to see the scatterplot with the line of best fit!

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