Under the right circumstances and all other things equal,_________ produces the most efficient samples and provides the most precise or reliable estimates for a given sample size.
A)Proportional stratified allocation
B)Disproportional stratified allocation
C)Optimal allocation
D)B & C
E)None of the above

Question

Quizplus · Accepted Answer

Disproportional stratified allocation may be more efficient than proportional allocation if there is a large variation in the sizes of strata and if the measure of interest is more variable within certain strata than others. Optimal allocation further improves efficiency by taking into account the cost of sampling from each stratum. Therefore, a combination of disproportional and optimal allocation typically produces the most efficient samples and reliable estimates for a given sample size.

Under the Right Circumstances and All Other Things Equal,_________ Produces