A market vendor in Port of Spain wants to survey customers about preferred fruit varieties. She has limited time and decides to ask every 10th customer who makes a purchase. What is the main advantage of this sampling method?

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Question

A market vendor in Port of Spain wants to survey customers about preferred fruit varieties. She has limited time and decides to ask every 10th customer who makes a purchase. What is the main advantage of this sampling method?

Accepted Answer

It is quicker and easier to implement than simple random sampling — Award 1 mark for recognizing the practical advantage of systematic sampling. A is incorrect — systematic sampling can still introduce bias, especially if there is a periodic pattern in the population. C is incorrect — no sampling method guarantees perfect representation. D is incorrect — systematic sampling does not require knowing the exact population size in advance.

Answer

It requires knowledge of the total population size

Answer

It guarantees a representative sample of all customer types

Answer

It is quicker and easier to implement than simple random sampling

Answer

It eliminates all bias from the sample

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