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Signed Numbers: SAT Math II Algebra I

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Concepts: Praxis I Algebra

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Quadratic Equations and Radicals: COOP-HSPT Algebra

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Verbal Problems: CLEP Algebra I

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Equations with Several Variables: Praxis I Algebra

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Circles - Regular Polygons: GED Geometry

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Polynomials: CLEP Algebra I

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Addition and Subtraction: Decimals: SAT Arithmetic

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Oblique Triangles: CLEP Algebra II

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N.P.Bali; P.N.Gupta; Dr C.P.Gandhi Laxmi Publications PDF

Unit-I

Introduction to Statistics

1

Introduction to Statistics

1.1. INTRODUCTION

The word �Statistics� has been derived from an Italian word �statista� which means

�State� or �Province�. Most of the researchers also believe that the word �Statistics� comes from the German word �Statistik� which means �Political State�. The word �Statistics� was first appeared in the famous book entitled, �Elements of Universal Erudition� written by a famous author �J.F. Baran�.

1.2. MEANING OF STATISTICS

The word �statistics� may be defined as �the science of collection, organisation, presentation, analysis and interpretation of numerical data.�

According to Prof. Bowley, �Statistics may be called the science of counting.�

But this definition covers only one aspect of science, namely the collection of data. It ignores other important aspects like organization, presentation, analysis and interpretation.

According to Prof. Boddington, �Statistics is the science of estimates and probabilities.�

This definition is also not complete as it does not cover all the aspects of statistics.

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Exponents: COOP-HSPT Algebra

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Sets: SAT Math II Algebra I

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Square Roots and Powers: SAT Arithmetic

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Similar Polygons: Praxis I Geometry

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Ratio and Proportion: GED Algebra

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