"bla bla bla sample size bla bla"
But seriously, while you can question the sample pool and whether it's representative of the nation, this at least highlights a problem. To be fair, the results are better than every other country sampled except South Korea (which is still pretty sad).
And finally, my favorite quote for people on both sides of the statistics reliability debate: "All statistics are wrong; some are useful."
English
-
I'm currently learning how stats represent everything in one of my engineering classes. A lot of are problems are seeing if a sample represents a population. Most of the time it doesn't and that is one concept we learned in class. Stats get abused a lot and even when they're abused they're still correct because you manipulate and reword stats in a certain way.