CSSGB · Question #156
When the sampling method used creates a difference between the result obtained from the sample and the actual population value, the difference is known as
The correct answer is D. bias. Bias (D) is correct because it specifically describes the systematic error introduced when a sampling method consistently skews results away from the true population value - it's a flaw baked into how the sample was collected, not random chance. Correlation (A) describes the…
Question
When the sampling method used creates a difference between the result obtained from the sample and the actual population value, the difference is known as
Options
- Acorrelation
- Bprecision
- Caccuracy
- Dbias
How the community answered
(37 responses)- B5% (2)
- C3% (1)
- D92% (34)
Explanation
Bias (D) is correct because it specifically describes the systematic error introduced when a sampling method consistently skews results away from the true population value - it's a flaw baked into how the sample was collected, not random chance.
Correlation (A) describes the statistical relationship between two variables, not sampling error. Precision (B) refers to how consistently repeated measurements cluster together, regardless of whether they're near the true value. Accuracy (C) is about how close a single measurement is to the true value, but it doesn't describe the difference caused by the sampling method itself - that distinction belongs to bias.
Memory tip: Think of a scale that's miscalibrated - every reading is off by the same amount in the same direction. That systematic, method-driven distortion = bias. If the exam mentions the sampling method causing the difference, that's your signal to choose bias over accuracy.
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