A truly "randomly sampled" phone survey would skew to a very old demographic, and successfully recruiting younger generations with this tactic is a notorious ch

A truly "randomly sampled" phone survey would skew to a very old demographic, and successfully recruiting younger generations with this tactic is a notorious challenge (online works better). What they don't tell you though is that it's not truly random as claimed. They recruit a representative sample of respondents. So there are young people in the sample, it just takes more calls to get the data. Source: I run these surveys