Exercise

Starting off

The example we'll use in this chapter is a randomized controlled experiment investigating the effects of talking on a cell phone while driving. The dependent variable in the experiment is the number of driving errors that subjects made in a driving simulator. There are two independent variables:

  • Conversation difficulty: None, Low, High
  • Driving difficulty: Easy, Difficult

Each of the subjects was randomly assigned to one of six conditions formed by combining different values of the independent variables.

What is the number of factor levels for each independent variable?

Instructions

50 XP

Possible answers