Which of the Following Is NOT One of the Key

question 22

Multiple Choice

Which of the following is NOT one of the key categories of symptoms for diagnosing autism?

• A) qualitative impairment in social interaction
• B) qualitative impairment in communication
• C) qualitative impairment in adaptive skills
• D) restricted, repetitive, and stereotyped patterns of behavior, interest, and activities

---

Definitions:

Population Means

The average value of a given characteristic within a specified population.

Point Estimate

A single value or statistic calculated from a sample and used to estimate a corresponding population parameter.

Population Means

Refers to the average of all the individual values in a population.

T Distribution

A type of probability distribution that is symmetric and bell-shaped, commonly used for estimating population parameters when the sample size is small and the population variance is unknown.