Because otherwise the data would be artificially lower in areas with more children.
For example, imagine a suburb in Utah filled with college educated software engineers with big Mormon families. If you count the kids, it might look like people there don’t have degrees.
Doesn’t a bachelor’s take 4-5 years, with people starting around 18-19? I guess we’re only talking about a year or two so the higher age is to help cut down on the noise (doubt there’s many people with bachelor’s dying before 25 to skew the results)
Why only count people older than 25?
Below 25 it depends on how fast you finish your studies whether you own a bachelor’s degree yet or not.
Because otherwise the data would be artificially lower in areas with more children.
For example, imagine a suburb in Utah filled with college educated software engineers with big Mormon families. If you count the kids, it might look like people there don’t have degrees.
Doesn’t a bachelor’s take 4-5 years, with people starting around 18-19? I guess we’re only talking about a year or two so the higher age is to help cut down on the noise (doubt there’s many people with bachelor’s dying before 25 to skew the results)
It filters out college towns with large masters and doctorate programs.
That’s a good point, need to control for students. Wouldn’t 25 year olds still be in school for their doctorates though?