Download Class 9 Math Exercise 11.2 Notes PDF – Basic Statistics (Mean of Grouped Data)
Download Class 9 Math Exercise 11.2 Notes provide a clear explanation of how to calculate the mean of grouped data using three methods: Direct Method, Assumed Mean Method, and Step-Deviation Method. These notes are aligned with the FBISE 2025 SLO-based curriculum and follow the format required by BISE Lahore, BIE Karachi, BISE Peshawar, and FBISE Islamabad.
Key topics include:
- How to organize grouped data for mean calculation
- Use of midpoints (class marks) and frequencies
- Application of all three mean calculation methods
- Interpretation of results and common exam patterns
Why Download These Notes?
- Well-formatted board-style examples
- Color-coded steps for easier learning
- Ready-to-print PDF version for offline practice
More Statistics Notes – Unit 11
Exercise 11.1 Notes (Grouped Data Basics)
Exercise 11.3 Notes (Median and Mode)
Miscellaneous Exercise 11 Notes
