Which statement is correct?
A)Selecting every fifth shopper arriving at a store will approximate a random sample of shoppers.
B)Selecting only shoppers who drive SUVs is a stratified sampling method.
C)A census is preferable to a sample for most business problems.
D)Stratified samples are usually cheaper than other methods.

Question

Quizplus · Accepted Answer

Selecting every fifth shopper arriving at a store is a type of systematic sampling, which can approximate a random sample if the shoppers are arriving at random times.

Answer: B
 Selecting only shoppers who drive SUVs is a type of purposive or judgmental sampling, not stratified sampling, as it is not based on dividing the population into subgroups.

Answer: C
 A census is not always preferable to a sample, as it can be more time-consuming and expensive to survey an entire population. Samples can provide accurate results with less effort and cost, as long as they are chosen carefully and representatively.

Answer: None of the statements are correct.

Which Statement Is Correct