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Question 120 - CBDA discussion

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A research marketer is interested in collecting information about the spending habits of families in North America. Concerned about the volume of data required to conduct the research, they choose to use sampling. The dataset is sourced using all credit card transactions from a leading North American credit card company for Quarter 1 of the prior year. The sample used is:

A.
Statistically representative
Answers
A.
Statistically representative
B.
Not relevant
Answers
B.
Not relevant
C.
Too large to be helpful
Answers
C.
Too large to be helpful
D.
Biased
Answers
D.
Biased
Suggested answer: D

Explanation:

The sample used in this case is biased, meaning that it is not representative of the population of interest. The population of interest is the families in North America, but the sample is drawn from only one source of data: the credit card transactions from a leading North American credit card company. This sample excludes the families who do not use credit cards, or who use other credit card companies, or who use other payment methods. Therefore, the sample is not random or fair, and it may introduce sampling bias into the research results12

Reference: 1: Sampling Methods | Types, Techniques & Examples 2: Sampling Bias - an overview | ScienceDirect Topics

asked 18/09/2024
Joseph Lewis
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