Objective+17+-+The+Line+of+Best+Fit

STAT, #1Edit, type values into the lists || || Set up for the scatterplot. 2nd StatPlot - choices shown at right. Choose ZOOM #9 ZoomStat. Graph shown below. || || STAT → CALC #4 LinReg(ax+b) Include the parameters L1, L2, Y1. (Y1 comes from VARS → YVARS, #Function, Y1) You now have the values of a and b needed to write the equation of the line of best fit. See values below. y = 11.73128088x + 193.8521475 || Simply hit GRAPH. To get a predicted value **within the window**, hit TRACE, up arrow, and type the desired value. || By using this chart you can estimate a seccond value according to a first value. || = = =*Calculator instructions found at http://regentsprep.org/Regents/math/data/linefitcalc.html= =This Slide Show Shows How to do an Accelerated Math Question.= media type="custom" key="56804" = = = = = =
 * **1.** Enter the data in the calculator lists. Place the data in L1 and L2.
 * **2.** Prepare a scatter plot of the data.
 * **3.** Have the calculator determine the line of best fit.
 * [[image:http://regentsprep.org/Regents/math/data/linefi11.gif width="200" height="136" align="center"]][[image:http://regentsprep.org/Regents/math/data/linefi12.gif width="200" height="136" align="center"]] ||
 * **4.** Graph the line of best fit.