Descriptive statistics

Descriptive statistics is a branch of statistics that aims to organize and summarize collected data so that it can be presented clearly. It mainly uses methods for understanding the central tendency and the dispersion of data, with representative measures including the mean, median, mode, and standard deviation. These measures make it possible to express the information contained in large amounts of data concisely and to make it easier to understand. Descriptive statistics is widely used as the first step in data analysis, and it also lays the foundation for the next stage of analysis, inferential statistics.