Dr. Anamika Shrivastava NCERT Economics · Class 11 & 12

Class 11 · Book 2 of 2

NCERT Statistics for Economics: Class 11 Chapters Explained

Quick answerStatistics for Economics is the Class 11 NCERT book on collecting, organising, presenting and analysing data. Its eight chapters cover data collection, frequency tables, diagrams, averages, correlation, index numbers such as the CPI, and a complete statistics project, using worked examples throughout.

Reviewed and approved by Dr. Anamika ShrivastavaPublished Last updated

Chapters in Statistics for Economics

All eight chapters, in textbook order. Each page has a quick answer, worked examples with original data, ten important questions and ten PSC/UPSC points.

  1. 1

    Introduction

    Why economics needs data, economic activity, what statistics is and does, and its limits.

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  2. 2

    Collection of Data

    Primary and secondary data, questionnaires, census and sample surveys, sampling errors, Census and NSS.

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  3. 3

    Organisation of Data

    Raw data, classification, variables, frequency distributions, class limits and bivariate tables.

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  4. 4

    Presentation of Data

    Tables, bar and pie diagrams, histograms, frequency polygons, ogives and time series graphs.

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  5. 5

    Measures of Central Tendency

    Mean, weighted mean, median, quartiles, percentiles and mode, and how to choose an average.

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  6. 6

    Correlation

    Scatter diagrams, Karl Pearson's coefficient and Spearman's rank correlation.

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  7. 7

    Index Numbers

    Laspeyres and Paasche indices, price relatives, and the CPI, WPI, IIP, Sensex and HDI.

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  8. 8

    Use of Statistical Tools

    Steps in a statistics project, topic ideas and a worked sample project.

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How the chapters connect

The book follows the life of a piece of data. Chapter 2 collects it, Chapter 3 organises it into classes, and Chapter 4 draws it. Chapters 5 and 6 then summarise it, first with a single average and then by relating two variables. Chapter 7 turns many prices or quantities into one index, and Chapter 8 repeats the whole path in a project.

If you are short of time, master the averages first: the median and the mean appear again in correlation, index numbers and the project.

This edition has no separate chapter on measures of dispersion. Check your school’s syllabus if your teacher uses older material.

Key terms for this book

Per capita income Primary data Census Sample survey Frequency distribution Histogram Arithmetic mean Median Mode Correlation Index number Consumer Price Index

Open the economics glossary