There are many useful ways to present your research data to editors, referees, and readers. Tables and figures are particularly effective when large amounts of information have to be presented and discussed in an effective way. In fact, many journal editors and reviewers take a quick look at all the figures and tables in a manuscript before they actually start to review it.
In some cases, using too much text can be confusing and exhausting, so summarizing your data in a visual form —including tables, line graphs, pie charts, scatter plots, and others— can be very helpful. It allows you to present your results in a consolidated manner and help readers to get an overview of the most important findings of your work without having to go through the entire manuscript.
However, too many visuals can interrupt the flow of the text, so it is important to include tables and figures prudentially, without overusing them. The best scientific papers are always a good combination of written and visual information.