Using statistics in an essay can improve the quality and effectiveness of the writing in several ways. Here are some examples:

- Adding credibility: When you include statistics in your essay, you are providing concrete evidence to support your arguments and claims. This can help to strengthen your argument and make it more convincing to the reader.
- Supporting your main points: Statistics can be used to provide support for your main points and help to illustrate the significance of your argument. For example, if you are writing about the impact of a new policy on crime rates, you could use statistics to show how the policy has affected the number of crimes committed in a specific area.
- Adding context: Statistics can provide context and help to put your argument into perspective. For example, if you are writing about the impact of social media on relationships, you could use statistics to show how many people use social media and how much time they spend on it. This can help the reader understand the scope and impact of the issue you are discussing.
- Clarifying complex ideas: Statistics can help to clarify complex ideas and make them easier for the reader to understand. For example, if you are writing about the relationship between income and education, you could use statistics to show how education levels differ among different income groups.
- Providing visual aids: Statistics can be presented in a visual format, such as graphs or charts, which can make them easier for the reader to understand and remember. These visual aids can also help to break up the text and make the essay more visually appealing.
Overall, using statistics in an essay can help to improve the quality and effectiveness of the writing by adding credibility, supporting main points, providing context, clarifying complex ideas, and providing visual aids. It is important to use statistics carefully and accurately, and to provide proper attribution to the sources of the data.