4 ms·
That's not true. If I take the top 5 students based on performance in a test, and put them in a group. They will likely do worse the second time around. No need
by overeater 8y ago
That's not true. If I take the top 5 students based on performance in a test, and put them in a group. They will likely do worse the second time around. No need to know the mean.