Answer :
Final answer:
If a 10-year-old takes an IQ test and answers the questions of a 9-year-old, it means that they are functioning at a cognitive level similar to a 9-year-old.
Explanation:
IQ tests are designed to measure a person's intelligence quotient, or IQ. The average IQ score is 100, with a standard deviation of 15 points. If a 10-year-old takes an IQ test and answers the questions of a 9-year-old, it means that they are functioning at a cognitive level similar to a 9-year-old.
However, it is important to note that IQ tests are just one measure of intelligence and do not encompass all aspects of a person's abilities.