CHAPTER 1 A Preview of Business statistics to accompany Introduction to business statistics fourth edition by ronald M. Weiers Presentation by Priscilla Chaffe-Stengel Donald N. stengel o 2002 The Wadsworth Group
CHAPTER 1: A Preview of Business Statistics to accompany Introduction to Business Statistics fourth edition, by Ronald M. Weiers Presentation by Priscilla Chaffe-Stengel Donald N. Stengel © 2002 The Wadsworth Group
ll Chapter 1-Key terms Collection, summarization analysis, and reporting of numerical findings Statistics-IwO Usages A. The study of statistics B Statistics as reported sample measures 》1. Descriptive >>2. Inferential o 2002 The Wadsworth Group
Chapter 1 - Key Terms • Collection, summarization, analysis, and reporting of numerical findings • Statistics - Two Usages – A. The study of statistics – B. Statistics as reported sample measures »1. Descriptive »2. Inferential © 2002 The Wadsworth Group
ll Chapter 1-Key terms Inferential statistics POPULATION SAMPLE How Census Selected Taken Subset Measure Parameter Statistic o 2002 The Wadsworth Group
Chapter 1 - Key Terms Inferential Statistics POPULATION SAMPLE How Taken Census Selected Subset Measure Parameter Statistic © 2002 The Wadsworth Group
Ⅷ Types of va ariables Qualitative variables Attributes, categories Examples: male/female, registered to vote/not ethnicity eye color Quantitative variables Discrete -usually take on integer values but can take on fractions when variable allows-counts, how many Continuous-can take on any value at any point along an interval measurements how much C 2002 The Wadsworth Group
Types of Variables • Qualitative Variables – Attributes, categories »Examples: male/female, registered to vote/not, ethnicity, eye color.... • Quantitative Variables – Discrete - usually take on integer values but can take on fractions when variable allows - counts, how many – Continuous - can take on any value at any point along an interval - measurements, how much © 2002 The Wadsworth Group
I Example: Types of ariables Problem 1.16 For each of the following indicate whether the appropriate variable would be qualitative or quantitative. If the variable is quantitative, indicate whether it would be discrete or continuous o 2002 The Wadsworth Group
Example: Types of Variables Problem 1.16 • For each of the following, indicate whether the appropriate variable would be qualitative or quantitative. If the variable is quantitative, indicate whether it would be discrete or continuous. © 2002 The Wadsworth Group