34.4 The Shape and Spread of Data: Quantiles and Dispersion
Point 2 of 6
34.4.2 Quartiles and the Interquartile Range
Core idea
The three points that split the line into four equal parts are Q₁, Q₂, Q₃, and the span of the middle half is IQR = Q₃ − Q₁
Module goal. Describe a distribution from both position and variability, master quartiles, range, variance, and standard deviation, paving the way for box plots and spread comparisons
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