Multiple Choice
Once you have the significance value of the t-test, it is beneficial to calculate the effect size. Cohen's d is a measure of effect size. How is it calculated?
A) (mean 2 - mean 1) / mean of the standard deviation
B) (mean 2 - mean 1) × mean of the standard deviation
C) (mean 2 + mean 1) - mean of the standard deviation
D) (mean 2 / mean 1) + mean of the standard deviation
Correct Answer:

Verified
Correct Answer:
Verified
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