Hi Guys,

Need help with dropping a variable. This is my data:

ccode ifscode country group region inc year
USA 111 United States Advanced Economies North America High Income 1990
USA 111 United States Advanced Economies North America High Income 1991
USA 111 United States Advanced Economies North America High Income 1992
USA 111 United States Advanced Economies North America High Income 1993
USA 111 United States Advanced Economies North America High Income 1994
USA 111 United States Advanced Economies North America High Income 1995
USA 111 United States Advanced Economies North America High Income 1996
USA 111 United States Advanced Economies North America High Income 1997
USA 111 United States Advanced Economies North America High Income 1998
USA 111 United States Advanced Economies North America High Income 1999
USA 111 United States Advanced Economies North America High Income 2000
USA 111 United States Advanced Economies North America High Income 2001
USA 111 United States Advanced Economies North America High Income 2002
USA 111 United States Advanced Economies North America High Income 2003
USA 111 United States Advanced Economies North America High Income 2004
USA 111 United States Advanced Economies North America High Income 2005
USA 111 United States Advanced Economies North America High Income 2006
USA 111 United States Advanced Economies North America High Income 2007
USA 111 United States Advanced Economies North America High Income 2008
USA 111 United States Advanced Economies North America High Income 2009
USA 111 United States Advanced Economies North America High Income 2010
USA 111 United States Advanced Economies North America High Income 2011
USA 111 United States Advanced Economies North America High Income 2012
USA 111 United States Advanced Economies North America High Income 2013

I have many variables. But I just copied a few rows to give an idea. The dataset is available at: https://www.worldbank.org/en/researc...f/fiscal-space

So under group we have Advanced Economies and EMDC. I want to drop all Advanced Economies countries and keep only the EMDC. So when I enter command:
. drop if group==Advanced Economies

I get an error: Advanced not found

Where am I going wrong? Thanks for your help.