Consider the following values for the dependent and independent variables:
x y
6…………………….5
9……………………20
14…………………..28
18…………………..30
22…………………..33
27…………………..35
a. Develop a scatter plot of the data. Does the plot suggest a linear or nonlinear relationship between the dependent and independent variables?
b. Develop an estimated linear regression equation for the data. Is the relationship significant? Test at an α = 0.05 level.
c. Develop a regression equation of the form = b0 + b1 ln (x). Does this equation provide a better fit to the data than that found in part b?