Wechsler’s concept of a deviation IQ compares a person’s intelligence

/in /by

Wechsler’s concept of a deviation IQ compares a person’s intelligence

Deviation IQ is scored based on how an individual deviates from the average IQ of 100. It measures IQ as a normal distribution with the average IQ being a 100 with a standard deviation of +/- 15.

It measures IQ as a normal distribution with the average IQ being a 100 with a standard deviation of +/- 15.4

What is the mean and standard deviation for Wechsler scaled scores?
Wechsler SCALED SCORES have an average (mean) of 10 and a standard deviation of 3. A scaled score of 10 would also be at the 50th percentile rank. The middle half of these standard scores falls between 8 and 12.