2.119 Does driver’s ed help? A study is planned to look at the effect of driver education programs on accidents. The driving records of all drivers under 18 in a given year will classify each driver as having taken a driver’s education course or not. The drivers will also classified with respect to the number of accidents that they had in the year after they received their license. The categories are zero, one, and two or more accidents.
(a) There are two variables in this study. Do you think one is an explanatory variable and the other is a response variable? Explain your answer.
(b) Sketch a two-way table that could be used to organize the data. Which variable is the row variable? Which variable is the column variable?
(c) How many cells are in the table? Describe in words what each of the cells will contain when the data are collected.