Below are four distinct arguments that rely on statistical, survey, or polling data. Each argument commits a specific methodological fallacy. Pair each argument with the abstract logical description that best characterizes its underlying vulnerability.
- An educational task force evaluated the effectiveness of a demanding three-year academic acceleration program by assessing the standardized test scores of the students enrolled in their third year. Because 98 percent of these students scored in the top percentile, the task force concluded that the program drastically improves the academic performance of any student who enters it.It bases a conclusion about the efficacy of a process on a sample that systematically excludes individuals who were unable or unwilling to complete the process.
- During a broadcast concerning proposed zoning regulations, a television news anchor directed viewers to participate in an online poll regarding the controversial legislation. Given that 85 percent of the respondents expressed vehement opposition, the network reported that the vast majority of the electorate rejects the zoning changes.It assumes that a group whose members self-selected for inclusion in a poll provides an accurate representation of a population that includes many who would lack the motivation to participate.
- In order to estimate the average amount of sleep adults in a sprawling metropolis get per night, researchers interviewed patrons at several 24-hour coffee shops between the hours of 2:00 AM and 5:00 AM. They subsequently concluded that the typical adult in the metropolis sleeps fewer than five hours per night.It derives a generalized metric from a demographic subset whose location and timing of selection make them highly anomalous compared to the population at large.
- A political campaign distributed a questionnaire that asked, 'Do you support the incumbent's reckless economic policies that threaten to bankrupt our municipality?' Relying on the responses, the campaign manager declared that 90 percent of constituents oppose the incumbent's economic policies.It treats survey data as an objective measure of public sentiment despite the fact that the phrasing of the inquiry was designed to elicit a specific response.
Cevap
The educational task force argument matches the survivorship bias description. The television news anchor argument matches the self-selection bias description. The sleep researchers argument matches the anomalous demographic subset description. The political campaign argument matches the loaded inquiry phrasing description.
Each argument commits a distinct sampling or survey flaw. The task force argument is flawed because it measures success only among those who survived a multi-year process (survivorship bias). The news poll is flawed because it relies on viewers motivated enough to respond, who rarely represent the broader population (voluntary response bias). The sleep study is flawed because surveying people at a coffee shop at 3:00 AM guarantees a sample of people with atypical sleep patterns (unrepresentative sample). The political survey is flawed because the loaded wording of the question forces respondents toward a particular answer (framing effect).
Adım Adım Çözüm
Anahtar Kavram
Identifying Specific Types of Sampling and Survey Flaws in Logical Arguments
Tahmini Süre:3m 0s