Twelve-Year-Old Arnold Received an IQ Test Score of 75

question 235

Multiple Choice

Twelve-year-old Arnold received an IQ test score of 75. What is his mental age?

• A) Seven
• B) Five
• C) Ten
• D) Nine

---

Definitions:

IQR

The interquartile range, a measure of statistical variability between the 25th and 75th percentiles.

Range

The difference between the highest and lowest values in a dataset, providing a measure of the data's dispersion.

Standard Deviation

An indicator calculating the spread of data around the mean, achieved by the square root of the variance.

Mean

The average of a set of numbers, calculated by dividing the sum of these numbers by the count of the numbers in the set.