Question

15-24: Consider the following values for the dependent and independent variables:

                                         x                                        y

                                         5                                       10

                                         15                                     15

                                         40                                     25

                                         50                                     44

                                         60                                     79

                                         80                                     112

1. Develop a scatter plot of the dat Does the plot suggest a linear or nonlinear relationship between the dependent and independent variables?
2. Develop an estimated linear regression equation for the data. Is the relationship significant? Test at an α=0.05 level.
3. Develop a regression equation of the form y^=b₀+b₁x+b₂x². Does this equation provide a better fit to the data than that found in part b?                    

please type answer so I can read it

Answer 1

a) here we saw some linear pattern in x and yfrom the graph

b) and regression is also significant at 5% level of significant because pvalue is lesss then 0.05c) here we saw that nonlinear at 2 degree also fit good..pvalue is lesss then 5% regression is significant.

And let's see here plot fit really good as compare to simple linear