3 ms·
Every 15 IQ points from 100 is one standard deviation away, where 100 is the average. So 145 is 3 standard deviations away from average or 99.7%.
by darthvoldemort 5y ago
Every 15 IQ points from 100 is one standard deviation away, where 100 is the average. So 145 is 3 standard deviations away from average or 99.7%.
- lkbm 5y agoI think it's 99.7% within three standard deviations (e.g., in either direction) so presumably half as many are three standard deviations above the mean—99.85% (top 0.15%). Tiny % either way.