Chapter 1 Section 1.ppt
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This document provides an overview and introduction to key concepts in statistics. It discusses how statistics uses data from samples to make inferences about larger populations. It notes that precise definitions for important terms like "sample" and "population" will be introduced. Finally, it outlines the chapter sections, which will cover describing and collecting data, as well as common vocabulary and examples.
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This document outlines the key steps in conducting a statistical study: prepare, analyze, and conclude. It discusses important considerations for each step, such as determining the context and goals, assessing potential biases in data sources and sampling methods, using graphs to explore data, applying appropriate statistical methods, establishing statistical and practical significance of results, and avoiding potential pitfalls like misleading conclusions, small samples, and biases that can influence a study's findings.
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· What confidence percentage will you use?
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Chapter 1 Section 1.ppt
- 1. Section 1.1-‹#› Copyright © 2014, 2012, 2010 Pearson Education, Inc. Lecture Slides Elementary Statistics Twelfth Edition and the Triola Statistics Series by Mario F. Triola
- 2. Section 1.1-‹#› Copyright © 2014, 2012, 2010 Pearson Education, Inc. Preview Polls, studies, surveys and other data collecting tools collect data from a small part of a larger group so that we can learn something about the larger group. This is a common and important goal of statistics: Learn about a large group by examining data from some of its members.
- 3. Section 1.1-‹#› Copyright © 2014, 2012, 2010 Pearson Education, Inc. Preview In this context, the terms sample and population have special meaning. Formal definitions for these and other basic terms will be given here. In this chapter, we will look at some of the ways to describe data.
- 4. Section 1.1-‹#› Copyright © 2014, 2012, 2010 Pearson Education, Inc. What is Statistics • The practice or science of collecting and analyzing numerical data in large quantities, especially for the purpose of inferring proportions in a whole from those in a representative sample. • “There are lies damn lies and statistics”- Mark Twain
- 5. Section 1.1-‹#› Copyright © 2014, 2012, 2010 Pearson Education, Inc. Chapter 1 Introduction to Statistics 1-1 Review and Preview 1-2 Statistical and Critical Thinking 1-3 Types of Data 1-4 Collecting Sample Data
- 6. Section 1.1-‹#› Copyright © 2014, 2012, 2010 Pearson Education, Inc. Vocabulary
- 7. Section 1.1-‹#› Copyright © 2014, 2012, 2010 Pearson Education, Inc. Graphs
- 8. Section 1.1-‹#› Copyright © 2014, 2012, 2010 Pearson Education, Inc. Flawed Methods Misleading Graph
- 9. Section 1.1-‹#› Copyright © 2014, 2012, 2010 Pearson Education, Inc. Selecting Samplings
- 10. Section 1.1-‹#› Copyright © 2014, 2012, 2010 Pearson Education, Inc. Example The Gallup corporation collected data from 1013 adults in the United States. Results showed that 66% of the respondents worried about identity theft. The population consists of all 241,472,385 adults in the United States. The sample consists of the 1013 polled adults. The objective is to use the sample data as a basis for drawing a conclusion about the whole population.