The survey says that the median age of respondents was 27 and on average they started programming 11 months ago. They didn't give a standard deviation, but pres

The survey says that the median age of respondents was 27 and on average they started programming 11 months ago. They didn't give a standard deviation, but presumably there are not many who are in their early teens. I say this because the cohort you describe will have started playing games at a younger age, and would have self selected itself out of this survey by venturing into small time game development on their own at an age younger than the survey respondent demographic.