A Researcher Selects a Sample from a Population with μ

question 25

Multiple Choice

A researcher selects a sample from a population with μ = 30 and uses the sample to evaluate the effect of a treatment.After treatment,the sample has a mean of M = 32 and a variance of s² = 6.If Cohen's d is used to measure the size of the treatment effect,which of the following would have no effect on the value of Cohen's d?

• A)Increase the sample size
• B)Increase the sample mean
• C)Increase the sample variance
• D)All of the other options will influence the value of Cohen's d.

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