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)

Answer 1

To finish the second part of the question is that there’s a strong linear correlation between the data

Answer 2

The equation of the line of best fit is y = -4.75x + 88.571 and the correlation coefficient for the data that is shown is -0.906.

y = ax + b
a = -4.75
b = -88.571
r² = 0.821
r = -0.906