CEPD · Module 2 — Visual and information design for screens

Charts and tables as evidence

Label units, cite sources, and don’t turn Cohen’s d into a percentage bar.

About 16 min

Practice in the lesson player

Sorting, matching, quizzes, and the module gate stay behind a free account so scored answers are not public. The teaching notes below are the same cited curriculum.

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What this lesson covers

  1. 01

    Data slides need editors

    A chart slide is not clip art. Production directors label the unit (%, median d, count), cite the source under the graphic, and cap bar count so mobile readers can scan. CDLA Module 2 taught Mayer’s ds — production must not display them as “70% improvement.”

  2. 02

    Chart QC checklist

    Check | Pass? | Why

    Unit on chart | Yes | Prevents d vs % confusion

    Source caption | Yes | Fact-check trail

    ≤10 bars on mobile | Yes | Reduces extraneous load

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