The most common intelligence quotient (IQ) scale is Normally distributed with a mean of 100 and a standard deviation of 15. Many school districts across the country seek to identify "gifted and...

The most common intelligence quotient (IQ) scale is Normally distributed with a mean of 100 and a standard deviation of 15. Many school districts across the country seek to identify "gifted and talented" children for special enrichment programs. Typically, these children must have IQ scores in the top 55%