If you have a nominal variable that has more than two levels, you need to create multiple dummy variables to take the place of the original nominal variable. For example, imagine that you wanted to predict depression from year in school: freshman, sophomore, junior, or senior.
Washington Post, Redskinsâ Kirk Cousins played a round of golf with President Trump, June 14, 2017. The Hill, Trump plays 18 holes of golf at Virginia club, June 25, 2017. Washington Post, Trump had a terrible July, but at least he played a lot of golf, July 31, 2017. Washington Post, Trump seen at his N.J. golf course, Aug. 7, 2017
Knoller told Yahoo News that in his six years in office, Obama has played 186 rounds of golf so far. Bush, on the other hand, only played 24 rounds of golf. â[Bush] later explained his decision to stop in the fall of 2003 by saying he felt it was not appropriate to be seen golfing while American troops fought in Afghanistan and Iraq,â reports Yahoo News.