Chapter 8 Essay
A. Statistics are often used to describe and interpret the results of intelligence testing.
- Describe three measures of central tendency (mean, medium, and mode).
- Describe a skewed distribution
- Relate three measures of central tendency to a normal distribution
- Relate three measures of central tendency to a positively skewed distribution
- An intelligence test for which scores are normally distributed has a mean of 100 and a standard deviation of 15. Use this information to describe how the scores are distributed.
- In two normal distributions, the means are 100 for group I and 115 for group II. Can an individual in group I have a higher score than the mean score for group II? Explain.
B. Apply knowledge of psychological research in answering the following questions about intelligence scores.
- Explain why norms for intelligence tests are periodically updated.
- Describe how to determine whether an intelligence test is biased.
