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?
Systematic error is the primary problem with this survey.
This survey is flawed because it only collects opinions from California residents, which introduces a systematic bias against Amusement Park X located in Texas. By excluding responses from individuals who may prefer Park X, the survey results will not accurately represent the true preferences of the entire population.
Information bias occurs when the data collected is inaccurate due to faulty data collection methods or participant misrepresentation. In this case, while the survey may gather accurate responses from California residents, it fails to account for preferences from a wider audience, leading to a misrepresentation of overall preference rather than an issue with the accuracy of the collected information itself.
Measurement bias refers to errors introduced by the tools or methods used to gather data, which can skew results. However, in this survey, the measurement method (asking people about their preferences) is consistent; it is the selection of respondents that is biased. Thus, this bias does not pertain to the measurement aspect itself.
Random error involves variability in data that arises due to chance, affecting the reliability of results. This survey's problem is not random; it's systematic due to the deliberate exclusion of Texas residents. Random errors would not consistently skew results in one direction, whereas the survey's design inherently favors responses from California residents.
Systematic error is caused by a consistent, repeatable error associated with faulty reasoning or methodology in the design of the survey. Since this survey only targets California residents, it systematically underrepresents the preferences of Texas residents, leading to skewed results that do not reflect the true population's preferences.
The survey's design flaw lies in its systematic error, as it only gathers opinions from a specific geographic region, thereby excluding a significant portion of the population that could provide different preferences. This limitation prevents the survey from accurately reflecting the true preferences between Amusement Park W and X, ultimately rendering the results unreliable for broader interpretations.
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