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.
Schoolboy aged 13 joins Mensa after scoring 160 in IQ test - rivalling Albert Einstein. Niraj Kumar, 13, is in the top one per cent of the UKâs brightest people as the average adult has an IQ of 100. Genius schoolgirl scores huge 162 on IQ test - higher than Stephen Hawking, Albert Einstein and Bill Gates.