90-110 range of I.Q., represent which intellectual category?

Question

Accepted Answer

The question asks about the intellectual category represented by an I.Q. range of 90-110. According to the given correct answer, Option 1, "Average," is the correct choice. Here's a detailed explanation supporting this:

1. **Justification for Option 1 (Average):**
   - The I.Q. scale is designed to have a mean score of 100, with a standard deviation of 15. This means that the majority of the population will score around this average.
   - An I.Q. score between 90 and 110 is considered to be within one standard deviation of the mean, which encompasses about 68% of the population. This range is typically classified as "Average" intelligence.
   - Therefore, individuals with an I.Q. in the 90-110 range are considered to have average intellectual abilities, as they fall within the most common range of scores.

2. **Explanation for why other options are incorrect:**
   - **Option 2 (Below Average):** An I.Q. score below 90 would typically be classified as "Below Average." Since the range in question is 90-110, it does not fall into the below-average category.
   - **Option 3 (Above Average):** An I.Q. score above 110 would be considered "Above Average." Since the range in question includes scores up to 110, it does not qualify as above average.
   - **Option 4 (Superior):** The "Superior" category generally refers to I.Q. scores significantly higher than the average, often starting around 120 or above. The 90-110 range does not meet this criterion.

In conclusion, the I.Q. range of 90-110 is best described as "Average," making Option 1 the correct answer. This classification aligns with standard interpretations of I.Q. scores and their distribution within the general population.