Asked by Courtney Mendez on Jul 29, 2024
Verified
Which of the following would be considered a 'large' effect size according to Cohen?
A) r2 = .21
B) r2 = .02
C) r2 = .05
D) r2 = .12
Effect Size
A quantifiable measure of the magnitude of the difference between groups or the strength of a relationship in research findings.
Cohen
A surname often associated with statistical measures of effect size, such as Cohen's d for measuring the difference between two means.
- Identify what constitutes small, medium, and large effect sizes according to Cohen's benchmarks.
Verified Answer
PM
Perla MartosJul 31, 2024
Final Answer :
A
Explanation :
According to Cohen's conventions, an effect size (r) of .10 is considered small, .30 is medium, and .50 is large. Therefore, an effect size of .21 is closest to the medium threshold but is considered large compared to the other options provided.
Learning Objectives
- Identify what constitutes small, medium, and large effect sizes according to Cohen's benchmarks.