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.
Obama has played more than 1,100 hours of golf as president â here's what that looks like. On the last day of President Barack Obama's sixth summer holiday at Martha's Vineyard, he played the ninth and final round of his 17-day vacation â about one every other day. America's 54-year-old commander in chief has played about 247 rounds of golf, according to CNN's State of the Union broadcast. CBS News White House correspondent Mark Knoller estimates Obama has spent more than 1,100 hours on the links, which CNN says puts him on par with avid golfer President Dwight D. Eisenhower.