CONTENTS Foreword iii Chapter 1 : Introduction 1 Chapter 2 : Collection of Data 9 Chapter 3 : Organisation of Data 22 Chapter 4 : Presentation of Data 40 Chapter 5 : Measures of Central Tendency 58 Chapter 6 : Measures of Dispersion 74 Chapter 7 : Correlation 91 Chapter 8 : Index Numbers 107 Chapter 9 : Use of Statistical Tools 121 APPENDIX A : GLOSSARY 131 APPENDIX B : TABLE OF OF STATISTICAL TERMS TWO-DIGIT RANDOM NUMBERS 134