Chapter 1.1（课件）- 《统计学基础（英文版）》同步教学（人民大学版）

Chapter Introduction to Statistics 1 1 Copyright 2019, 2015, 2012, Pearson Education, Inc. 1 Larson/Farber 7th ed Chapter 1 Chapter Outline 1.1 An Overview of Statistics 1.2 Data Classification 1.3 Data Collection and Experimental Design 1 Copyright 2019, 2015, 2012, Pearson Education, Inc. Chapter 1 Larson/Farber 7th ed 2 Section 1.1 An Overview of Statistics 1 Copyright 2019, 2015, 2012, Pearson Education, Inc. Chapter 1 Larson/Farber 7th ed 3 Section 1.1 Objectives A definition of statistics How to distinguish between a population and a sample and between a parameter and a statistic How to distinguish between descriptive statistics and inferential statistics 1 Copyright 2019, 2015, 2012, Pearson Education, Inc. Chapter 1 Larson/Farber 7th ed 4 What is Data? Data Consist of information coming from observations, counts, measurements, or responses. According to a survey, more than 7 in 10 Americans say a nursing career is a prestigious occupation. (Source: The Harris Poll) “Social media consumes kids today as well, as more score their first social media accounts at an average age of 11.4 years old.” (Source: Influence Central’s 2016 Digital Trends Study) 1 Copyright 2019, 2015, 2012, Pearson Education, Inc. Chapter 1 Larson/Farber 7th ed 5 What is Statistics? Statistics The science of collecting, organizing, analyzing, and interpreting data in order to make decisions. 1 Copyright 2019, 2015, 2012, Pearson Education, Inc. Chapter 1 Larson/Farber 7th ed 6 Data Sets Population The collection of all outcomes, responses, measurements, or counts that are of interest. Sample A subset, or part, of the population. 1 Copyright 2019, 2015, 2012, Pearson Education, Inc. Chapter 1 Larson/Farber 7th ed 7 Example: Identifying Data Sets In a recent survey, 834 employees in the United States were asked if they thought there jobs were highly stressful. Of the 834 respondents, 517 said yes. Identify the population and the sample. Describe the sample data set. (Source: Care