Final answer:
Amber's IQ, calculated using the standard formula of (Mental Age / Chronological Age) x 100, would be 150, a score that classifies her as having a 'gifted' level of intelligence.
Step-by-step explanation:
Amber was given a Stanford-Binet intelligence test and her mental age was determined to be 27; her chronological age is 18. To calculate Amber's IQ, we would use the formula: IQ = (Mental Age / Chronological Age) × 100.
So, Amber's IQ would be calculated as follows:
- IQ = (27 / 18) × 100 = 1.5 × 100
- IQ = 150
This means Amber's IQ score would be 150, which is considered to be in the 'gifted' or very high intelligence range. Factoring in that the majority of people have an IQ score between 85 and 115 and that an IQ score of 130 or higher is often considered 'gifted', Amber's score is quite exceptional. It is well above both the average range and the threshold for being considered gifted.