Amusement Park W is in California. Amusement Park X is in Texas. A survey asks 1,000 people living in California if they prefer Amusement Park W or X. Which problem exists with this survey?
Measurement bias is present in the survey.
The survey's design is flawed because it only asks California residents about their preferences, which inherently skews the results in favor of Amusement Park W. This geographical limitation creates a bias, as the sample does not accurately represent the overall preferences of the population that includes potential visitors from Texas.
Systematic error refers to consistent, repeatable errors that arise from flawed equipment or methodology. In this case, while the survey design has a significant issue, it does not consistently mismeasure preferences; instead, it fails to capture a balanced view of opinions, making "systematic error" an inaccurate label for this situation.
Random error pertains to variations in data that occur by chance, leading to unpredictable inaccuracies. Unlike random errors, the bias in this survey results from its specific design choice to include only Californians, which systematically skews results rather than introducing randomness.
Measurement bias occurs when the method of collecting data leads to results that misrepresent the true situation. In this case, by surveying only California residents, the results disproportionately reflect preferences for Amusement Park W and do not account for the views of Texas residents, who may prefer Amusement Park X. This design flaw directly impacts the validity of the survey's conclusions.
Information bias arises when there are inaccuracies in the data collected through misinterpretation or poor survey questions. While the survey does have limitations, the primary issue is not about the accuracy of the information provided by respondents but rather the selection of the sample itself, which leads to measurement bias.
The survey's design suffers from measurement bias due to its exclusive focus on California residents, thus failing to consider the preferences of potential visitors from Texas. This bias compromises the reliability of the survey results and prevents an accurate representation of overall preferences between Amusement Park W and Amusement Park X.
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