Easy2 marksMultiple Choice
Audit EvidenceAudit SamplingISA 530

ACCA · Question 13 · Audit Evidence

CASE SCENARIO: Global Freightways PLC
Global Freightways PLC is a cross-border logistics and shipping multinational. You are the audit senior for the year ended 31 March 20X7. The company has complex revenue recognition policies due to shipments spanning multiple accounting periods. Furthermore, they hold significant foreign currency bank accounts. Global Freightways relies heavily on a bespoke, automated IT system called 'Track-It' to record shipments, calculate freight charges, and generate invoices automatically based on weight and distance.

QUESTION:
You are selecting a sample of shipments to test for revenue cut-off. You decide to select every 20th shipment recorded in the 'Track-It' system for the two weeks before and after the year-end. Which sampling method are you using?

Answer options:

A.

Random sampling

B.

Stratified sampling

C.

Systematic sampling

D.

Haphazard sampling

How to approach this question

Identify the characteristic of the sampling method described: selecting every 'nth' item.

Full Answer

C.Systematic sampling✓ Correct
Systematic selection involves selecting items using a constant interval between selections, the first interval having a random start. In this case, selecting every 20th shipment is a classic example of systematic sampling.

Common mistakes

Confusing systematic sampling with random sampling. Random sampling requires every item to have an equal chance of selection independently of the others, usually achieved via random number generators.

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