But I took 10 samples. Let's take it to the extreme. Lets say the test had 100 questions. If out of all the people who took the test, one person got a score o

But I took 10 samples. Let's take it to the extreme. Lets say the test had 100 questions. If out of all the people who took the test, one person got a score of 100/100 out of 10 million people who took the test it means that there are meaningful differences, it's just that most people can't identify those differences.