Question

You are asked to write an equation for the line of best fit for a scatter plot. What should you do first?

a) Find the slope using (4,6) and (5,8).
b) Decide which two points give the most representative straight line.
c) Find the slope using (1,2) and (9,12).
d) Connect the points together.

Answer 1

To write an equation for the line of best fit for a scatter plot, you need to enter the data into a calculator and make a scatter plot. Then, use the calculator's regression function to find the equation of the least-squares regression line and add it to the scatter plot.

Step-by-step explanation:

a. Enter the data into a calculator and make a scatter plot.

b. Use the calculator's regression function to find the equation of the least-squares regression line. Add this to your scatter plot from Part A.