In this chapter, students will learn how to organise, represent, and analyse data using statistical methods. They will understand how to find the mean of ungrouped and grouped data, and apply different techniques such as the direct method, assumed mean method, and step deviation method for efficient calculation.

Students will also learn to find the median and mode of grouped and ungrouped data and understand their significance in real-life situations. The chapter further introduces cumulative frequency distributions and their graphical representation through ogives, helping students analyse large sets of data effectively. This chapter plays an important role in developing data interpretation and analytical skills for the CBSE Board examinations.