Example: In order to predict the next twelve-month’s maintenance and repair expenses for a specific one-year-old Ford currently in the motorpool, we’d first perform a regression analysis using age and ...

This is called an interaction between the explanatory variables. A simple step towards a better model ... the difference between the associated value, and the base case.) Example: To include ...

have presented a number of analyses to assess the effects of various explanatory variables on the survival of patients. This example fits two of the models that they have considered.

When you perform the trend test, the explanatory variable may be numeric (for example, dose of a test substance), and these variable values may be appropriate scores. If the explanatory variable has ...

Economists develop economic models to explain consistently recurring relationships. Their models link one or more economic variables to other economic variables. For example, economists connect the ...