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What is Cohen's d and how is it used in statistics?

An example of an AI chatbot conversation about Cohen's d in statistics.

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You

What is Cohen's d and how is it used in statistics?

MagicBuddy
MagicBuddy

Cohen's d is a measure of effect size that indicates the standardized difference between two means. It's commonly used in hypothesis testing.

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You

Can you explain how to calculate Cohen's d?

MagicBuddy
MagicBuddy

Sure! Cohen's d is calculated by taking the difference between the two group means and dividing it by the pooled standard deviation.

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You

What does a Cohen's d value of 0.5 indicate?

MagicBuddy
MagicBuddy

A Cohen's d value of 0.5 suggests a medium effect size, meaning there is a moderate difference between the two groups.

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You

Are there any limitations to using Cohen's d?

MagicBuddy
MagicBuddy

Yes, Cohen's d does not account for sample size and can be misleading if the sample sizes are very different.

😀
You

How does Cohen's d compare to other effect size measures?

MagicBuddy
MagicBuddy

Cohen's d is one of several effect size measures; others include Pearson's r and eta-squared, each with its own context of use.

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