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Syllabus

Measures Of Dispersion — Syllabus

ICSE · Class 11 · Economics

What Measures Of Dispersion covers in ICSE Class 11 Economics: 4 topics, for the 2026-27 session. Part of the ICSE Class 11 Economics syllabus.

52 questions40 flashcards2 formulas & key relations5 concepts

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4 Topics · ICSE Class 11 Economics · 2026-27

Topics in Measures Of Dispersion

1

Meaning and Need of Dispersion

  • Dispersion shows the scatteredness or variation of values in a series.
  • It is used in two senses: variation among items, and average difference from the mean.
  • A single average does not always represent all observations well.
2

Types of Measures of Dispersion

  • Absolute measures are expressed in the same unit as the data, such as rupees, kilograms, or years.
  • Relative measures are coefficients or percentages and do not depend on the unit of measurement.
  • Absolute measures include range, quartile deviation, mean deviation, and standard deviation.
3

Range and Coefficient of Range

  • Range is the simplest measure of dispersion.
  • It is the difference between the largest and smallest value of a series.
  • Range is not based on all values.
4

Quartile Deviation, Inter-Quartile Range, and Percentile Range

  • Inter-quartile range shows the spread of the middle 50% of data.
  • Inter-quartile range is Q3 - Q1.
  • Quartile deviation is half of the inter-quartile range.

Key Concepts

Central concept: Dispersion as a measure of spread in a series

Meaning of dispersionNeed and objectives of dispersionCharacteristics of a good measure of dispersionTypes of measures of dispersionMethods of limitsMethods of averaging deviationsGraphic methodRange

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Frequently Asked Questions

What are the important topics in Measures Of Dispersion for ICSE Class 11 Economics?
Key topics in Measures Of Dispersion include Meaning and Need of Dispersion, Types of Measures of Dispersion, Range and Coefficient of Range, Quartile Deviation, Inter-Quartile Range, and Percentile Range. Study these first, then practise questions on each for Class 11 exams.
How should I revise Measures Of Dispersion for Class 11 exams?
Learn the core ideas first, then work through the 52 practice questions on Measures Of Dispersion. 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.

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