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Chapter 1: Introduction to Statistics (सांख्यिकी का परिचय)
Statistics (सांख्यिकी) is a branch of mathematics that deals with the collection, analysis, interpretation, presentation, and organization of data. In this chapter, we will explore the basic concepts of statistics and its significance in various fields.

Key Concepts
- Data: Data refers to the information collected for analysis. It can be in the form of numbers, words, or symbols.
- Variables: Variables are characteristics or attributes that can take different values. They can be classified as qualitative (categorical) or quantitative (numerical).
- Population and Sample: Population refers to the entire group being studied, while a sample is a subset of the population used for analysis.
- Descriptive and Inferential Statistics: Descriptive statistics involve summarizing and presenting data, while inferential statistics focus on making predictions and inferences about a population based on sample data.

Uses of Statistics (सांख्यिकी का उपयोग)
Statistics plays a crucial role in various fields such as business, economics, social sciences, healthcare, and research. It helps in decision-making, forecasting, quality control, and understanding trends and patterns in data.

Importance of Statistics (सांख्यिकी का महत्व)
Statistics helps in organizing and analyzing data to draw meaningful conclusions. It enables us to make informed decisions, identify trends, and solve real-world problems. Understanding statistics is essential for research, policymaking, and everyday life.
In summary, statistics is a powerful tool for analyzing and interpreting data in different fields. It provides valuable insights and helps in making informed decisions based on evidence and facts.