Help students master grouped data with an IB‑aligned, student‑friendly mini‑unit that teaches how to build grouped frequency tables, when and how to use frequency density with unequal class widths, how to draw and read frequency density histograms, and how to estimate the mean using midpoints. Clear objectives and examples keep the focus tight: organize data, compute frequency density, create/read histograms, and estimate the mean from grouped data. Why it helps students Walks them from