Question

Find the equation of the line of best fit and the correlation coefficient for the data shown.

(1, 88), (2, 75), (3, 71), (4, 69), (5,66), (6, 68), (7, 50)

Regression equation:

Answer 1

Using a calculator, we have that:

• The regression equation is given by:  y = -4.75x + 88.57143.

• The correlation coefficient is given by: -0.906.

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.

In this problem, we have that:

• The values of x are: 1, 2, 3, 4, 5, 6, 7.

• The values of y are: 88, 75, 71, 69, 66, 68, 50.

Hence the regression equation is:

y = -4.75x + 88.57143.

Also using a calculator, the correlation coefficient is of -0.906.

More can be learned about a line of best-fit at https://brainly.com/question/22992800

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