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Measures Of Central Tendency — Revision Notes

ICSE · Class 11 · Economics

Measures Of Central Tendency revision notes for ICSE Class 11 Economics: 4 topics in quick points. Part of the ICSE Class 11 Economics syllabus.

59 questions40 flashcards8 formulas & key relations5 concepts

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Key Topics to Revise

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1. Meaning, Objectives, and Essentials of an Ideal Average

  • Central tendency is a single figure that represents the whole mass of data.
  • Measures of central tendency are also called statistical averages or measures of location.
  • The three most commonly used measures are mean, median, and mode.
2

2. Arithmetic Mean

  • Arithmetic mean is the most popular and most widely used measure of central tendency.
  • It is defined as the sum of values of a group of items divided by the number of items.
  • Arithmetic mean can be simple or weighted.
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3. Weighted Arithmetic Mean and Charlier's Check

  • Weighted arithmetic mean is used when different values have different importance.
  • It is greater than simple arithmetic mean when small values get less weight and large values get more weight.
  • Weighted mean is used in wage-bill calculations, comparison of board or university results, standardized birth and death rates, and index numbers.
4

4. Median

  • Median is the middle value of a series when arranged in ascending or descending order.
  • It divides the series into two equal parts.
  • Median is a positional average, so it is not based on all values.

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Full Notes

Key Concepts

Central tendency is a single figureArithmetic mean is defined asWeighted arithmetic mean is used whenMedian is the middle valueMode is the value that occurs

Frequently Asked Questions

What are the important topics in Measures Of Central Tendency for ICSE Class 11 Economics?
Key topics in Measures Of Central Tendency include Meaning, Objectives, and Essentials of an Ideal Average, Arithmetic Mean, Weighted Arithmetic Mean and Charlier's Check, Median. Study these first, then practise questions on each for Class 11 exams.
How should I revise Measures Of Central Tendency for Class 11 exams?
Learn the core ideas first, then work through the 59 practice questions on Measures Of Central Tendency. 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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