Question

How can I predict the number for 2021 by using the line of best fit r=.9925 m=615.769 b= -1.2045×10^6

Answer 1

The formula for the best fitting line is

$y=mx+b$

Where m si the slope of the regression line and b is the y-intercept

Now at point

$x=2021$

We shall get

$y=615.769\times2021-(1.2045\times10^6)$$y=39969.149$

So number for 2021 can be predicted by the equation of the given line.