Asked by Summer April on Jul 16, 2024
Verified
A group of graduate students studying psychology take a national comprehensive exam. On the test, their mean score is about 0.5 standard deviation above the mean as compared to the national score. The variability of their scores is less than the national mean. If passing is 1 standard deviation below the mean, it is likely that many have failed.
Standard Deviation
A measure of the amount of variation or dispersion of a set of values; a low standard deviation indicates that the values tend to be close to the mean of the set.
Variability
Refers to the degree of difference or deviation from the mean within a set of data.
National Mean
The average score or value derived from a dataset that represents a performance or characteristic of a broader population at the national level.
- Analyze test scores in relation to national norms.
Verified Answer
JC
Jorge ChavezJul 16, 2024
Final Answer :
False
Explanation :
Given that the group's mean score is 0.5 standard deviations above the national mean, and passing is defined as 1 standard deviation below the national mean, it is likely that most, if not all, of the students in this group have passed, especially considering their lower variability in scores.
Learning Objectives
- Analyze test scores in relation to national norms.