statistics

statistics - the s tatis tic al analys is o f data by Dr...

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1 the s tatis tical analys is of data by Dr. Dang Quang A & Dr. Bui The Hong Hanoi Institute of Information Technology

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2 Preface Statistics is the science of collecting, organizing and interpreting numerical and nonnumerical facts, which we call data. The collection and study of data are important in the work of many professions, so that training in the science of statistics is valuable preparation for variety of careers. , for example economists and financial advisors, businessmen, engineers, farmers Knownedge of probability and statistical methods also are useful for informatic specialists of various fields such as data mining, knowledge discovery, neural network, fuzzy system and so on. Whatever else it may be, statistics is, firsrt and foremost, a collection of tools used for converting raw data into information to help decision makers in their works. The science of data - statistics - is the subject of this course .
3 Audience and objective Audience This tutorial as an introductory course to statistics is intended mainly for users such as engineers, economists, managers,...which need to use statistical methods in their work and for students. However, it will be in many aspects useful for computer trainers. Objectives Understanding statistical reasoning Mastering basic statistical methods for analyzing data such as descriptive and inferential methods Ability to use methods of statistics in practice with the help of computer softwares in statistics Entry requirements High school algebra course (+elements of calculus) Skill of working with computer

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4 Contents Preface Chapter 1 Introduction …………. Chapter 2 Data presentation …... Chapter 3 Data characteristics ... descriptive summary statistics Chapter 4 Probability: Basic …... concepts …………………… . Chapter 5 Basic Probability distributions ………………... Chapter 6 Sampling Distributions ………………. Chapter 7 Estimation …………. Chapter 8 General Concepts of Hypothesis Testing ………….. Chapter 9 Applications of Hypothesis Testing ………….. Chapter 10 Categorical Data .... Analysis and Analysis of variance Chapter 11 Simple Linear ……… regression and correlation …… Chapter 12 Multiple regression Chapter 13 Nonparametric statistics ………………………… References Appendix A Appendix B Appendix C Appendix D Index •[Back]
5 Chapter 1 Introduction 1.1 What is Statistics Whatever else it may be, statistics is, first and foremost, a collection of tools used for converting raw data into information to help decision makers in their works. 1.2. Populations and samples A population is a whole, and a sample is a fraction of the whole. A population is a collection of all the elements we are studying and about which we are trying to draw conclusions. Such a population is often referred to as the target population.

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