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A Guide to Business Statistics

A Guide to Business Statistics

Autorzy
Wydawnictwo Blackwell Science
Data wydania 01/03/2018
Wydanie Pierwsze
Liczba stron 208
Forma publikacji książka w miękkiej oprawie
Poziom zaawansowania Dla profesjonalistów, specjalistów i badaczy naukowych
Język angielski
ISBN 9781119138358
Kategorie Matematyka w biznesie i systematyka, Matematyka
237.44 PLN (z VAT)
$61.82 / €55.49 / £47.78 /
Produkt na zamówienie
Przesyłka w 3-4 tygodnie
Ilość
Do schowka

Opis książki

An accessible text that explains fundamental concepts in business statistics that are often obscured by formulae and mathematical notation A Guide to Business Statistics offers a practical approach to statistics that covers the fundamental concepts in business and economics. The book maintains the level of rigor of a more conventional textbook in business statistics but uses a more stream lined and intuitive approach. In short, A Guide to Business Statistics provides clarity to the typical statistics textbook cluttered with notation and formulae. The author--an expert in the field--offers concise and straightforward explanations to the core principles and techniques in business statistics. The concepts are intro duced through examples, and the text is designed to be accessible to readers with a variety of backgrounds. To enhance learning, most of the mathematical formulae and notation appears in technical appendices at the end of each chapter. This important resource: Offers a comprehensive guide to understanding business statistics targeting business and economics students and professionals Introduces the concepts and techniques through concise and intuitive examples Focuses on understanding by moving distracting formulae and mathematical notation to appendices Offers intuition, insights, humor, and practical advice for students of business statistics Features coverage of sampling techniques, descriptive statistics, probability, sampling distributions, confidence intervals, hypothesis tests, and regression Written for undergraduate business students, business and economics majors, teachers, and practitioners, A Guide to Business Statistics offers an accessible guide to the key concepts and fundamental principles in statistics.

A Guide to Business Statistics

Spis treści

Preface xiii


1 Types of Data 1


1.1 Categorical Data 2


1.2 Numerical Data 3


1.3 Level of Measurement 4


1.4 Cross-Sectional, Time-Series, and Panel Data 5


1.5 Summary 7


2 Populations and Samples 9


2.1 What is the Population of Interest? 10


2.2 How to Sample From a Population? 11


2.2.1 Simple Random Sampling 11


2.2.2 Stratified Sampling 14


2.2.3 Other Methods 15


2.3 Getting the Data 16


2.4 Summary 17


3 Descriptive Statistics 19


3.1 Measures of Central Tendency 20


3.1.1 The Mean 20


3.1.2 The Median 23


3.1.3 The Mode 24


3.2 Measures of Variability 24


3.2.1 Variance and Standard Deviation 24


3.3 The Shape 26


3.4 Summary 28


Technical Appendix 29


4 Probability 31


4.1 Simple Probabilities 32


4.1.1 When to Add Probabilities Together 34


4.1.2 When to Find Intersections 36


4.2 Empirical Probabilities 37


4.3 Conditional Probabilities 39


4.4 Summary 41


Technical Appendix 42


5 The Normal Distribution 43


5.1 The Bell Shape 43


5.2 The Empirical Rule 44


5.3 Standard Normal Distribution 46


5.3.1 Probabilities with Continuous Distributions 48


5.3.2 Verifying the Empirical Rule Using the z-table 48


5.4 Normal Approximations 48


5.4.1 Mean 49


5.4.2 Standard deviation 49


5.4.3 Shape 50


5.5 Summary 51


Technical Appendix 52


6 Sampling Distributions 55


6.1 Defining a Sampling Distribution 55


6.2 The Importance of Sampling Distributions 56


6.3 An Example of a Sampling Distribution 57


6.4 Characteristics of a Sampling Distribution of a Mean 61


6.4.1 The Mean 61


6.4.2 The Shape 62


6.4.3 The Standard Deviation 64


6.4.4 Finding Probabilities With a Sampling Distribution 65


6.5 Sampling Distribution of a Proportion 67


6.5.1 The Mean 68


6.5.2 The Shape 68


6.5.3 The Standard Deviation 68


6.6 Summary 70


Technical Appendix 71


7 Confidence Intervals 73


7.1 Confidence Intervals for Means 74


7.1.1 The Characteristics of the Sampling Distribution 75


7.1.2 Confidence Intervals Using the z-Distribution 76


7.1.3 Confidence Intervals Using the t-Distribution 78


7.2 Confidence Intervals for Proportions 80


7.3 Sample Size and theWidth of Confidence Intervals 81


7.4 Comparing Two Proportions From the Same Poll 82


7.5 Summary 84


Technical Appendix 85


8 Hypothesis Tests of a Population Mean 89


8.1 Two-Tail Hypothesis Test of a Mean 90


8.1.1 A Single Sample from a Population 90


8.1.2 Setting Up the Null and Alternative Hypothesis 92


8.1.3 Decisions and Errors 92


8.1.4 Rejection Regions and Conclusions 94


8.1.5 Chan

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