busbars can have a cross sectional area of as little as 10 square millimetres 0 016 sq in but electrical substations may use metal tubes 50 millimetres 2 0 in in diameter 20 square millimetres 0 031 sq in or more as busbars
IQ bell curve. Standardized IQ tests are designed so that the exact average (mean) IQ score in the general population is 100. An âaverage IQ scoreâ or ânormal IQ scoreâ can be defined as a score between 85 and 115. 68% of people score between 85 and 115. The Mensa qualifying IQ score is a score that puts you in the top 2% of the population in a bell curve like this one. The Mensa qualifying score is 130 or higher, as shown below.
Research comparing IQ to presidential performance points to yes. Compared to the general population, presidents are smart people. The average IQ score in the general population is 100; about 118 for for a college graduate. All the U.S. presidents have higher IQs than that. But some are geniuses. Anything over 130 is considered high or a genius-level IQ. From Washington to George W. Bush, 28 U.S. presidents met that mark. Only 3 percent of Americans score above 130. Bill Clinton had the fifth-highest IQ. Note that Obama is not included in these data points.