I have another spin on it. Of those demographics, asians tend to be very recent migrants ( https://www.pewresearch.org/fact-tank/2021/04/09/asian-ameri... ) and migrants tend to be very hard-working within the first generation of migration ( https://obamawhitehouse.archives.gov/blog/2012/07/12/ten-way... ). Some of this could be selection bias (those who choose to move are those who are motivated to seek a better lif…
There is no margin of error when your sample is the entire population.