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Measures of spread: range, SD and quartiles

Two couriers with the same average delivery time, and why only one keeps the promise: measures of spread from range and variance to standard deviation (calculated step by step), quartiles, IQR and the coefficient of variation.

Lesson 2 of 24~48 min of learningIncludes ~27 min for questions and tasks

Read the theory (9 cards)
Dots spread along a line, with brackets marking how wide they spread.