Chapter 8 (Samacheer Kalvi) · Class 9 TN Board · Formula Sheet

Statistics (புள்ளியியல்) Formulas — Class 9 TN Board

Measures of central tendency — mean, median, mode for grouped and ungrouped data.

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Worked Examples

1Using: Probability

A die is thrown. Find P(getting an even number).

Step 1: Even outcomes: {2, 4, 6} = 3.

Step 2: Total outcomes = 6.

Step 3: P = 3/6 = 1/2.

Answer: 1/2

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Frequently Asked Questions

How many formulas are in Class 9 TN Board Statistics (புள்ளியியல்)?+
There are several key formulas in the Statistics (புள்ளியியல்) chapter for Class 9 TN Board. Each formula is essential for solving problems in this topic.
How to remember Statistics (புள்ளியியல்) formulas easily?+
Practice regularly with worked examples, group related formulas together, and use SparkEd's interactive practice mode to reinforce your memory through problem-solving.
Are these Statistics (புள்ளியியல்) formulas enough for exams?+
Yes, these formulas cover the complete TN Board Class 9 syllabus for Statistics (புள்ளியியல்). Practice applying them to different types of questions for full exam readiness.

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