A recent study of cognitive analyses says the average intelligence quotient, or IQ, in the United States is about 98.
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25 Clever Facts About Your IQ
Think You're Smart? The Ultimate List25 Trivia Challenge: <a href=" ►25 Signs You’re Smarter Than You Think: <a href=" ...
A one-tailed test checks whether a sample mean is higher or lower than the population mean. The one-tailed test gets its name from testing the area under one of the tails (sides) of a normal ...
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