The standard error of the estimate of the statistic in question
a. is equal to the square of the variance of the estimate.
b. measures the variability that exists between strata.
c. corresponds to the population mean.
d. is used when comparing statistical efficiency.
e. cannot be calculated from a stratified sample.
Question 2
The differences between a cluster sample and a stratified sample are in a
a. cluster sample, the parent population is divided into mutually exclusive and exhaustive subsets.
b. stratified sample, the parent population is divided into mutually exclusive and exhaustive subsets.
c. stratified sample, a simple random sample of elements is chosen independently from each group or subset, while in a cluster sample, a random sample of the subsets is selected.
d. cluster sample, a simple random sample of elements is chosen independently from each group or subset, while in a stratified sample, a random sample of the subsets is selected.
e. None of the above.
