Section A

A service firm wants to survey its clients. The client base consists of 60% small businesses, 30% medium enterprises, and 10% large corporations. The researcher selects a sample that exactly matches these proportions.

Which sampling method has been used?

Answer options:

Simple random sampling

Systematic sampling

Stratified sampling

Cluster sampling

How to approach this question

Identify the technique that divides a population into distinct groups (strata) and samples from each to maintain proportions.

Full Answer

C.Stratified sampling✓ Correct

Stratified sampling involves dividing the population into distinct subgroups (strata) that share similar characteristics, and then taking a random sample from each stratum in proportion to the stratum's size in the overall population.

Common mistakes

Confusing stratified sampling with quota sampling (quota is non-random, stratified is random within strata).

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Practice the full ACCA MA — Management Accounting Practice Exam 6

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