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Comparing the mean and the median, outliers:
AAffect neither centre at all
BAffect the mean but not the median
CAffect the median but not the mean
DAffect both centres equally
Answer & Solution
Correct answer: B. Affect the mean but not the median
1. The mean uses the actual value of every observation.
2. The median uses only the position of the values.
3. The mean is affected by outliers that do not influence the median.
4. That is why the median is preferred for house prices and incomes.
_Source: OpenStax Introductory Statistics 2e (CC BY 4.0), Ch 2 'Descriptive Statistics', sections 2.1-2.7_
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