Answer :
From the regression line of the data, we have that:
1) The slope is of -1.31.
2) The intercept is of 272.17.
3) The correlation coefficient is of -0.9.
How to find the equation of linear regression using a calculator?
To find the equation, we need to insert the points (x,y) in the calculator.
For this problem, the points are given as follows:
(31, 206), (51, 229), (87, 184), (102, 126), (120, 103).
Inserting these points into a calculator, the equation of the line is:
y = -1.31x + 272.17.
Hence:
1) The slope is of -1.31.
2) The intercept is of 272.17.
Also inserting these points into a calculator, the correlation coefficient is of -0.9.
More can be learned about linear regression at https://brainly.com/question/16793283
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