## How can you use a residual plot to tell

1.      How can you use a residual plot to tell if a line is a good model for data?

Statistics Review Chapters 4-5

2.      If you know a scatterplot has a curved shape, how can you decide whether to use a power model or an exponential model to fit data?

3.      Graph the following data:

Time (days)                       Mice

0                                                        6

30                                                    19

60                                                    60

90                                                    195

120                                                597

4.      Perform the appropriate logarithmic transformation (power or exponential) on the above data to get an equation.

5.      Check your equation in problem 94 using your calculator’s power and exponential regression functions.

6.      Make a residual plot to support your choice for problem 94.

7.      Graph the following data:

Diameter (inches)  Cost (dollars)

6                                                        3.50

9                                                        8.00

12                                                    14.50

15                                                    22.50

20                                                    39.50

8.      Perform the appropriate logarithmic transformation (power or exponential) on the above data to get an equation.

9.      Check your equation in problem 98 using your calculator’s power and exponential regression functions.

10.  Make a residual plot to support your choice for problem 98.

Pending
31 Jan 2018
Due Date: 01 Feb 2018