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.
In fact, Obama is the 15th of the last 18 presidents to play golf. Not only is he a hugely avid golfer, but a pretty fair one, too. As far as how much time he spends on the links, his annual rate of play is about the same as President Dwight D. Eisenhower, with President Bill Clinton right on their heels. It's clear, the presidency and our great game have quite a thing going.