How to Build a Probability-Teaching Dice Roller with Histograms and CSV Export

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A developer tutorial on DEV Community walks through building a statistically rigorous dice roller in JavaScript that goes beyond a single random number call. The project addresses common pitfalls such as mixing trial counts with face observation counts, which can produce misleading histogram probabilities. The implementation separates dice-rolling logic, state management, and DOM rendering into distinct functions, making the tool easier to test, animate, and extend with batch rolling. Key features include frequency histograms, running averages, and CSV export of trial history. The article also cautions that JavaScript's Math.random() is suitable for educational tools but must not be used in security-sensitive contexts.

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