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Data Science & Statistical Analysis• 6 min read
Dispersion: Variance & Standard Deviation
Measure the spread and variability of your data using variance and standard deviation.
Why Spread Matters
Two datasets can share identical means of 50, but one might range from 49 to 51 (low variability), while the other ranges from 0 to 100 (high volatility). Standard deviation (σ) quantifies this spread in the original data units.
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Test Yourself With Exercise
What is the relationship between variance and standard deviation?