Chapter 12, Problem 9PT

To determine

To find: the following will provide proof that the method is a power law model and clarify the relation between a response variable y and an explanatory variable x.

Answer to Problem 9PT

A scatterplot of in y versus in x looks approximately linear.

Explanation of Solution

The scatterplot of a power model has become linear if we convert both variables to its logarithms. In the options (a) and (b) both variables are without logarithms and in the option (c) only one variable in logarithms.

Hence, the correct option is (d)