Using the data from question #1, what is the equation of the line of best fit? (For future reference: line of best fit, linear regression equation, and least-squares line are all the same thing y=ax+b). Round your answers to the nearest tenth. x : {20,30,45,60,80,90,45,120,90,70} y: {50,45,55,70,80,90,80,100,95,85}

QUESTION POSTED AT 01/06/2020 - 04:22 PM

Answered by admin AT 01/06/2020 - 04:22 PM

You can solve this manually by plotting all points, fitting a line, finding its intercepts and obtaining the equation.

For the easier solution, use Mode STAT in your scientific calculator, input the x and y values, and find the m and b parameters for equation y = mx + b

The equation of the best fit line would be: y = 0.57x + 38.15
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