A sample of n = 16 individuals is selected from a population with μ = 60 and σ = 6 and a treatment is administered to the sample.After treatment,the sample mean is M = 63.What is the value of Cohen's d for this sample?
A)0.33
B)0.50
C)2.00
D)3.00

Question

A sample of n = 16 individuals is selected from a population with μ = 60 and σ = 6 and a treatment is administered to the sample.After treatment,the sample mean is M = 63.What is the value of Cohen's d for this sample?​
A)​0.33
B)​0.50
C)​2.00
D)​3.00

Quizplus · Accepted Answer

Cohen's d measures the effect size of the difference between two means. It is calculated by dividing the difference between the two means by the pooled standard deviation.

In this case, the difference between the sample mean and population mean is:

d = (M - μ) / σ
d = (63 - 60) / 6
d = 0.5

Therefore, the answer is B) 0.50.

A Sample of N = 16 Individuals Is Selected from a Population