Back to Class IX Mathematics
Classes IX, X & XI Mathematics

Chapter 12: Statistics

Standard NCERT & CBSE aligned study curriculum. Master concepts, track accuracy, revise weak areas, and challenge yourself with 9 customized practice modes.

Class Syllabus Selection

This topic is taught in multiple grades. Switch classes to see specific curriculum details:

Example 1

Adjusting Frequency for Histogram

For class interval 10-20, frequency is 30. If the minimum class width is 5, and active width is 10, find the adjusted frequency height.

Calculation Steps:

  1. 1Identify class width: 20 - 10 = 10.
  2. 2Identify min width: 5.
  3. 3Apply formula: F_adj = (30 / 10) * 5.
  4. 4Calculation: 3 * 5 = 15.
Solution15