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* refactor: clean to roadmap content * refactor: move shared helpers into scripts/lib
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Variance & Std. Deviation
Variance measures the average squared deviation from the mean, and standard deviation is its square root in the original units. Both quantify how spread out data values are. Pandas computes them with var() and std(). A high standard deviation relative to the mean signals high variability in the data.
Visit the following resources to learn more: