I have data with 156 variables and 10000 observations. Values of one variable are from 2 to 16 (only even) and I need to select 4 randomly selected values from this variable and keep them in data. I tried to use surveyselect procedure, but it doesn't work. I also thought about using ranuni, but don't know how to create even number:(
Here is the example data. I want ot select these observations with for example a=2 or 4 or 6 or 8, the I don't know the value and I want to get the random one from available.
and desired output in my example with a=2,4,6,8 would be observations 1,2,3,4,5,6,7,8,9,10,12,13,16.