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
Trump Tops Obama, Bush and Clinton in Golfing and Private Getaways So Far. 1  After years of criticizing former President Barack Obama for playing golf and going on private getaways, President Trump has already done more of both in his first 85 days than Mr. Obama, as well as former Presidents George W. Bush and Bill Clinton.