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 population with the smaller standard deviation (Population A) will have higher power to detect an effect than the population with the larger standard deviation, assuming all other factors are held constant. This is because a smaller standard deviation indicates less variability in the data, allowing for easier detection of any differences or patterns.

A Researcher Reports That the Standard Deviation in Population a Is