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.
Then for a third time that month, Mr. Trump tweeted about Mr. Obamaâs golf habit on Oct. 23, 2014. âPresident Obama has a major meeting on the N.Y.C. Ebola outbreak, with people flying in from all over the country, but decided to play golf!â. Photo. Barack Obama golfing on Marthaâs Vineyard in 2013. Credit Steven Senne/Associated Press As a president, though, Mr. Trump seems to have had a change of heart about the appropriateness of a president hitting the links.