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  • Vanderbilt University

    The Value of Effect Sizes

    Why Understanding Effect Sizes Are Important  Imagine you’re conducting a survey and want to understand how meaningful your results really are. Is this difference small or large compared to previous surveys conducted at my institution or with other populations? Enter Cohen’s d – one of several effect size measures.  What exactly is Cohen’s d? Cohen’s d is a statistical calculation that helps you compare the magnitude of differences between two groups, regardless… Read More

    Feb. 23, 2026