Advanced topic: If a study has 18 participants in the experimental group and 7 in the control group,what is the harmonic mean? A)18/(18+7)+ 7/(18+7)= 1.00 B)(2)(18)/(18+7)+ (2)(7)/(18+7)= 2.00 C)(2)(18)(7)/ (18+7)= 10.08 D)(18+7)² / (18+7)= 25

Question

Quizplus · Accepted Answer

The harmonic mean formula for two groups is (2 * n1 * n2) / (n1 + n2), where n1 and n2 are the sample sizes. Using this formula, we get (2 * 18 * 7)/(18 + 7) = 10.08. Therefore, the harmonic mean is 10.08, which is option C. Options A, B, and D are not applicable formulas for calculating the harmonic mean.

Advanced Topic: If a Study Has 18 Participants in the Experimental