DETERMINING A LINE OF BEST FIT (USING A GRAPHING CALCULATOR) Goal: Determine an equation for a line of best fit using a graphing calculator and define the squared deviation for the determined equation.
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DETERMINING A LINE OF BEST FIT
(USING A GRAPHING CALCULATOR)Goal: Determine an equation for a line of best fit using a graphing calculator and define the
squared deviation for the determined equation.
WARM UP
There are 3 steps you need to take in order to plot points on a calculator, what are they? (Feel free to use your graphing calculator guide)
1. Turn Plot 1 On (2nd – Stat Plot)2. Enter your data under L1 and L2 (STAT – Edit)3. Adjust your window4. Press Graph
Enter this data under L1 and L2
Press STAT
Enter this data under L1 and L2
Press “Edit”
Enter this data under L1 and L2
Enter this data under L1 and L2
Enter this data under L1 and L2
Enter this data under L1 and L2
Press “STAT”
Press the right arrow to highlight CALC and choose the function “LinReg”.
Press the right arrow to highlight CALC and choose the function “LinReg”.
Press “Enter” to get the equation.
Round each number to the nearest thousandth (three decimal places) & substitute them into the equation “ax+b” to get an equation for a line of best fit.
y = 0.240x + -400.989
THIS IS YOUR EQUATION FOR THE LINE OF BEST FIT!!!!!!
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