A histogram is a rumor about shape… and the bin width writes the rumor. Too wide and you smooth away the plot twist. Too narrow and everything is noise. Try three bin widths and pick the one that matches the decision you need to make. Name your unit (seconds, points, dollars) and label axes like you’re allergic to ambiguity. If your audience is small-n, consider a dotplot; people like to see the individuals before the crowd. Whatever you choose, annotate one sentence on the chart: “Most students cluster between 12–15 minutes.” If your annotation feels slippery, your bins probably are. Fix the bins, then fix the sentence.
