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.
How an IQ Test is Scored. The term IQ actually stands for intelligence quotient. To determine a person's IQ, a person's mental age is multiplied by 100 and then divided by the chronological age. The average IQ is said to be 100, so anything above that is considered above average. The range of what is considered developmentally disabled is thought to be anything below 70. Most people who are considered geniuses have IQs above 145. What an IQ Test Does Not Measure.