Question: In calculating the effect size between two groups (a placebo group and a high treatment group), you find an effect size of 1.85. What conclusions

In calculating the effect size between two groups (a placebo group and a high treatment group), you find an effect size of 1.85. What conclusions can you draw concerning the means?

A. The means differ by 18.5 standard deviations. This is quite a large effect,

B. The means differ by 1.85 standard deviations. This is quite a large effect,

C. he means differ by about 1/5 of a standard deviation this is quite a small effect,

D. The means differ by 1.85 points. This is quite a small effect.

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