For instance, if you take an average of a 0,1 variable, the result is the proportion of 1s in the distribution. To illustrate dummy variables, consider the simple regression model for a posttest-only two-group randomized experiment.
President Barack Obama has already played nearly eight times as many rounds of golf during his presidency as President George W. Bush did throughout his eight years in office, according to noted presidential chronicler of all things numerical, CBS Newsâ Mark Knoller.
AP Photo/Evan Vucci. (CBS News) CHICAGO -- There's something about golf that makes it a compelling pastime for American presidents. President Obama spent about 4 hours on Father's Day playing a round of golf at the Beverly Country Club with two old friends and an aide. It was his 100th round of golf since taking office. By the number of times he plays, it's clear Mr. Obama enjoys golf, though only on a few occasions has he spoken publicly about the game.