Asked by Giselle Saldana on Jul 29, 2024
Verified
Which statistic is an estimate of the magnitude of the difference between the means of two groups measured in standard deviation units?
A) r2
B) t2
C) Cohen's d
D) β
Cohen's D
Estimate of the magnitude of the difference between the means of two groups measured in standard deviation units.
- Calculate and interpret Cohen's d value for different group sizes and scenarios.
- Distinguish between different statistics (r, Cohen's d, t) and their purposes in research.
Verified Answer
SS
Sandeep SharmaAug 03, 2024
Final Answer :
C
Explanation :
Cohen's d is a commonly used effect size measure that estimates the magnitude of the difference between the means of two groups in standard deviation units. It is calculated by taking the difference between the means of the two groups and dividing it by the pooled standard deviation of the groups. This allows for the comparison of effect sizes across different studies and variables.
Learning Objectives
- Calculate and interpret Cohen's d value for different group sizes and scenarios.
- Distinguish between different statistics (r, Cohen's d, t) and their purposes in research.