A researcher reports that the standard deviation in Population A is = 2.3 and the standard deviation in Population B is = 4.3.Which population is associated with the highest power to detect an effect?
A)Population A
B)Population B
C)They are associated with the same level of power.

Question

A researcher reports that the standard deviation in Population A is  = 2.3 and the standard deviation in Population B is  = 4.3.Which population is associated with the highest power to detect an effect?
A)Population A 
B)Population B 
C)They are associated with the same level of power.

Quizplus · Accepted Answer

The standard deviation is a measure of variability within a population. A smaller standard deviation indicates less variability, which makes it easier to identify differences between groups or changes over time. Therefore, Population A, which has a smaller standard deviation, is associated with the highest power to detect an effect.

A Researcher Reports That the Standard Deviation in Population a Is