IQ > 130 [...] the tail above three standard deviations
Most IQ scales set the standard deviation at 15 points, not 10 points.
Yes, but we are starting from the mean which is 85 in this particular case.
Oh, I see. I was confused about what calculation you were doing; my apologies.
Most IQ scales set the standard deviation at 15 points, not 10 points.
Yes, but we are starting from the mean which is 85 in this particular case.
Oh, I see. I was confused about what calculation you were doing; my apologies.