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INTERACTIVE CONCEPTS
Explore key statistical ideas through live, interactive visualisations — like Brilliant, but for GCSE Statistics.
MEAN vs MEDIAN — OUTLIER EFFECT
Drag the slider to add an outlier. Watch how mean is pulled away but median stays stable.
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Mean (affected by outlier)
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Median (resistant)
💡 Key insight: The mean is sensitive to extreme values (outliers). When data is skewed, the median is a better measure of average.
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