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w9zd9_1
2009 Sep 14
2
how to recode with an if-type statement
I'm sure this is easy, but I'm having a hard time figuring out how to
recode some data in R.
I have a variable "numpeers" which is valued 1, 2, or 3. I also have
three other variables called "w9zd9_1," "w9zd9_2," and "w9zd9_3." I
want to use these variables to create a new item called "distot."
Specifically, here is what I want to do:
-if numpeers=1, then distot=w9zd9_1
-if numpeers=2, then distot=(w9zd9_1 + w9zd9_2)/2
-if numpeers=3, then distot=(w9zd9_1 + w9zd9_2 + w9zd9_3)/...