A researcher administers a treatment to a sample of n = 16 selected from a population with $\mu$ = 40 and $\sigma$ = 8.If the sample mean after treatment is M = 42, then Cohen's d = 1.00.

Question

Quizplus · Accepted Answer

Cohen's d is calculated as the difference between the sample mean and the population mean divided by the population standard deviation: $d = \frac{M - \mu}{\sigma} = \frac{42 - 40}{8} = 0.25$.

A Researcher Administers a Treatment to a Sample of N μ\muμ

A Researcher Administers a Treatment to a Sample of N $\mu$