In stratified sampling, there is a procedure that allows you to take information from each stratum to calculate an estimate of the overall population average. The procedure uses:

In stratified sampling, there is a procedure that allows you to take information from each stratum to calculate an estimate of the overall population average. The procedure uses:



A) a skewed average
B) a non-skewed average
C) a disproportionate average
D) a weighted average
E) the restrictive power, r, of the sample


Answer: d


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