For the following situation, consider the type of inference that the test user desires to make from the test score and indicate the type of validation study that would be most appropriate (content, criterion-related predictive, criterion-related concurrent, or construct): An observational rating scale is being developed to rate the classroom performance of first-year teachers, and experienced classroom teachers are asked to examine the items on the rating scale to see if they are relevant to effective performance.
Identify and describe two (2) problems that can affect the results of a criterion-related validity study.
A psychologist has been studying delayed recall of certain words using a new memory measure. On this measure, she has found that the distribution follows a normal curve. Using the normal curve table (provided on Canvas), what percentage of students have z-scores below -1.12?
- There is a 0.66 correlation between the number of movies that Nicolas Cage appeared in and the number of people who drowned in a pool. How much of the variance in the relationship between these two variables is accounted for?
