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.
The president regularly plays 18 hole rounds of golf and has even been known to play 27 holes in a single outing. The golf outings usually take 4.5 hours, but can be much shorter when heâs on vacation. TheDC assumed an average of four hours, and multiplied the time by 197, to get 788 hours.