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.
STORY HIGHLIGHTS. 1  Barack Obama has come in at eighth in a list of golf-playing American presidents. 2  Mr Obama comes in higher than both George Bush and Ronald Reagan. 3  The current president had played golf eight times more than Bush did during his entire tenure.