Entering Data in Your Calculator to Create a Scatter Plot



TI-83 or TI-84: Entering Data in Your Calculator to Create a Scatter PlotClear Out Old Data FirstPress the “2nd” key and then the + signScroll down to #4 where it says “ClrAllLists” and press ENTERPress ENTER again. Your screen should now read “DONE”457200463550030734002413000Enter New DataPress “STAT”“EDIT” should be highlighted, press ENTER.Type in the “X” values for the data into the first column called L1 . You can enter the data by typing in the numbers and pressing ENTER. Each time you press ENTER it will move you to the next line. When you are finished entering the “X” values into list one, press your right arrow to move you into the 2nd column, L2Enter the “Y” values into that column the same way you did the “X” values. 4572002032000Creating a “Regression Equation”:Once you have entered your data, your calculator is ready to figure out an equation for a “line of best fit”. Press “STAT”, arrow to “CALC”, arrow down to #4 where it says “Lin Reg ax + B” and press ENTER. 4572001968500The next steps will depend on your calculator model:For TI-83:Press the?[ENTER] key to perform the regression calculation.457200762000For TI-84:-6350058483500Ensure Xlist is set at L1, Ylist is set at L2 and Store RegEQ is set at Y1 by pressing [VARS] and scroll to the right to [Y-VARS] and hit [1] Function. Hit [1] again (Y1). ?Scroll down to Calculate and press [ENTER].The “a” value is the slope of the line and “b” value is the y-intercept of the line. ................
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