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Study Plan

Statistics — Study Plan

ICSE · Class 9 · Mathematics

A step-by-step study plan for Statistics, ICSE Class 9 Mathematics: what to learn first, what to practise and when to revise.

41 questions30 flashcards5 concepts

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An illustration comparing raw (ungrouped) data, arrayed data (sorted), and tabulated data (organized in a basic table with categories and totals).
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Study Plan

1
Day 1–2

Learn the Theory

Read the textbook chapter carefully. Note down definitions, formulas and key ideas. Focus on: 1. Data, Statistics, and Variable, 2. Tabulation, Frequency, and Frequency Distribution, 3. Grouped Frequency Distribution and Class Intervals.

2
Day 3

Practise

Solve the textbook exercises and extra practice questions. There are 41 questions available for this chapter.

3
Day 4

Revise & Test

Revise key points without looking at your notes. Take a practice quiz and mark weak areas for another pass.

4
Day 7

Spaced Revision

Come back to Statistics after a week. Use flashcards for quick recall and try past exam questions on this chapter.

What to Focus On

  • Statistics has both singular and plural meanings.
  • Data means a set of collected numerical facts.
  • Statistics deals with collecting, organising, analysing, and interpreting data.
  • A variable changes from one individual to another.
  • Continuous variables can take any value in a range.
  • Discrete variables cannot take every value in a range.
  • Raw data is the original data.
  • Arrayed data is arranged in ascending or descending order.
  • Sorting data makes patterns easier to see.

Common Mistakes to Avoid

Inclusive class intervals and exclusive class intervals mean the same thing.

The value 40 in the class interval 40-50 belongs to 30-40 because 40 is the upper limit of the previous class.

Inclusive class intervals can be used directly for histogram and frequency polygon without adjustment.

Memory Tips

Meaning of Statistics in singular and plural sense

Origin of the word Statistics

Statistics used in early times and now

Definition of data

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Frequently Asked Questions

What are the important topics in Statistics for ICSE Class 9 Mathematics?
Key topics in Statistics include Data, Statistics, and Variable, Tabulation, Frequency, and Frequency Distribution, Grouped Frequency Distribution and Class Intervals, Class-Size and Class-Mark. Study these first, then practise questions on each for Class 9 exams.
How should I revise Statistics for Class 9 exams?
Learn the core ideas first, then work through the 41 practice questions on Statistics. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Statistics

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