The presentation begins with an introduction, followed by an explanation of the two branches of statistics: descriptive and inferential. It then discusses the difference between population and sample size, emphasizing their roles in statistical analysis. Descriptive statistics are covered, focusing on summarizing and organizing data, while inferential statistics are explained in terms of making predictions or inferences about a population based on a sample. The process of collecting data is outlined, including the types of data and the distinction between discrete and continuous data. The classification of variables is discussed, followed by an overview of sampling techniques, with a focus on random and non-random sampling methods. The presentation further explains various methods of collecting data and different ways to present data effectively. It concludes with a summary, reinforcing the importance of proper data collection and presentation in statistical analysis.