Chapter 9: Data Handling
📘 About this chapter
Collecting data, tally marks, pictographs, bar graphs and mean — introduction to statistics.
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Learning Objectives
By end of this chapter you will:
1
Understand Collecting and Recording Data and Pictograph2
Apply 2 key formulas3
Perform 1 practised experiment4
Define: Data, Tally marks, Pictograph5
Solve NCERT exercises confidently🔗 Prerequisites
📌Chapter 8 concepts
📊 Chapter Stats
Difficulty🌱 Beginner
Est. Time50 min
Topics4
Formulas2
Experiments1
Progress0%
💡 Did You Know?
✦Statistics is used in cricket (batting average), medicine, business, weather forecasting
✦Mean is what most people call "average"
✦India's census data is collected every 10 years
🔑 Key Terms(click any term for AI explanation)