Statistics is a branch of mathematics that deals with the collection, organization, analysis, interpretation, and presentation of data. In Class 11, statistics is a subject that teaches students about the measures of dispersion and the methods of calculating grouped and ungrouped data. Some of the concepts covered in this chapter include:

• Introduction to statistics
• Measures of central tendency (mean, median, and mode)
• Measures of dispersion (range, quartile deviation, mean deviation, and standard deviation)

Statistics is a crucial process that helps in making decisions based on data. It is used in many different fields such as business, medicine, biology, psychology, and social sciences. There are two types of statistics: descriptive statistics and inferential statistics. Descriptive statistics focuses on summarizing data, while inferential statistics focuses on making conclusions about populations based on samples.

In summary, statistics is a subject that teaches students how to collect, organize, analyze, interpret, and present data. It is a crucial process that helps in making decisions based on data and is used in many different fields.