Start with the reader’s task
A table, a chart, and a written description can present the same results, but they make different tasks easier. Before choosing a format, ask what readers should take away. Do they need to look up an exact number, see a pattern, or understand why a result matters? Choose the format that makes that task least demanding.
Imagine a survey asked participants which of four study spaces they prefer. If a reader needs the percentage for each space, a table makes the values easy to find. If the point is that one space is far more popular than the others, a bar chart makes the contrast quick to see. If the only relevant conclusion is that the library was the most frequently chosen space, a sentence may be enough. None of these formats is automatically more rigorous; each emphasizes something different.
Use a table when precise values matter
Tables work well when readers may need to compare individual entries, check exact values, or find results for several groups and measures. A table showing preferred study space by year of study, for example, lets readers locate the value for a particular year and space without estimating it from a bar. Tables are also useful when a report must show values that are important for completeness but not all worth discussing in the main text.
Keep the structure as simple as the question allows. Give columns clear labels, state units such as percentages or minutes, and explain what a row represents. If percentages are shown, identify what they are percentages of. Avoid including so many columns that readers must repeatedly trace across the page. When only one or two numbers matter, putting them in a sentence is often clearer than building a table around them.
A table does not interpret itself. If a comparison is important, name it briefly in the surrounding text rather than expecting readers to discover it. You can then leave the table to supply the exact values for anyone who wants to inspect them.
Use a chart when the shape of the result matters
Charts help readers see relationships that are harder to grasp from a list of numbers. A line chart can show how a measure changes across ordered time points. A bar chart can help compare categories, such as responses from different departments. A scatterplot can show whether two numerical measures tend to move together. Pick a chart because its visual structure serves a specific question, not because the results seem too plain without one.
Make the comparison fair to read. Label axes and units, use an appropriate scale, and make category names legible. For bar charts, a zero baseline usually helps prevent small differences from appearing dramatic. If groups have very different sizes, consider whether counts or percentages better answer the question, and say which you have used. Color can help distinguish groups, but labels or other cues should carry the meaning too.
A chart can reveal an apparent pattern without explaining it. A rising line does not, by itself, tell readers what caused the increase. Describe what the chart shows, then separate that observation from any possible explanation. If exact figures are essential, add selected values to the chart or provide a small table rather than asking readers to estimate from the image.
Use prose for the point, context, and limits
Written description is strongest when the finding is simple or when its meaning needs careful wording. Suppose a small pilot project found that participants completed a task faster on their second attempt. A sentence can report that result while noting that practice may have played a role. A chart might display the change, but it cannot carry that qualification as naturally as prose.
Prose also helps readers navigate a table or chart. Instead of repeating every entry, identify the comparison that answers the research question: “Completion times were lower on the second attempt in each group, with the largest difference in Group B.” Then point readers to the display for the details. Use measured language. Say “was higher” when that is what the results show; do not call a difference “important” without explaining the basis for that judgment.
When findings depend on definitions or missing information, state those limits near the finding. For example, a result based only on people who completed both attempts should not sound as though it describes everyone who started the project.
Make the final choice with a quick test
Try drafting the main message as one sentence. If the sentence conveys everything readers need, use prose. If readers will ask “What was the value for my group?”, use a table. If they will ask “What is the overall pattern?”, use a chart. When both questions matter, combine formats deliberately: use prose to state the takeaway, a chart to show the pattern, and a table only if exact values are genuinely useful.
Finally, check what each format leaves out. Can someone understand the point without decoding a crowded display? Are units, group definitions, and denominators clear? Does the wording avoid claiming more than the results support? The best presentation is not the one with the most graphics. It is the one that lets readers find the answer, see the evidence behind it, and understand its limits.
