Statistics All-In-One for Dummies - Deborah J Rumsey

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Résumé :

The odds-on best way to master stats.

Statistics All-in-One For Dummies is packed with lessons, examples, and practice problems to help you slay your stats course. Develop confidence and understanding in statistics with easy-to-understand (even fun) explanations of key concepts. Plus, you'll get access to online chapter quizzes and other resources that will turn you into a stats master. This book teaches you how to interpret graphs, determine probability, critique data, and so much more. Written by an expert author and serious statistics nerd, Statistics AIO For Dummies explains everything in terms anyone can understand.

• Get a grasp of basic statistics concepts required in every statistics course
• Clear up the process of interpreting graphs, understanding polls, and analyzing data
• Master correlation, regression, and other data analysis tools
• Score higher on stats tests and get a better grade in your high school or college class

Statistics All-in-One For Dummies follows the curriculum of intro college statistics courses (including AP Stats!) so you can learn everything you need to know to get the grade you need-the Dummies way....

Biographie:

Deborah Rumsey, PhD, is a Professor of Statistics and Statistics Education Specialist at The Ohio State University. She is the author of Statistics For Dummies, Statistics Workbook For Dummies, Statistics II For Dummies, and Probability For Dummies....

Sommaire:

Introduction 1

About This Book 1

Foolish Assumptions 2

Icons Used in This Book 3

Beyond the Book 3

Where to Go from Here 4

Unit 1: Getting Started with Statistics 5

Chapter 1: The Statistics of Everyday Life 7

Statistics and the Media: More Questions than Answers? 8

Probing popcorn problems 8

Venturing into viruses 8

Comprehending crashes 9

Mulling malpractice 9

Belaboring the loss of land 10

Scrutinizing schools 10

Scanning sports 10

Banking on business news 11

Touring the travel news 12

Surveying sexual stats 12

Breaking down weather reports 13

Using Statistics at Work 13

Delivering babies - and information 13

Posing for pictures 14

Poking through pizza data 14

Statistics in the office 14

Chapter 2: Taking Control: So Many Numbers, So Little Time 15

Detecting Errors, Exaggerations, and Just Plain Lies 16

Checking the math 16

Uncovering misleading statistics 17

Looking for lies in all the right places 22

Feeling the Impact of Misleading Statistics 23

Chapter 3: Tools of the Trade 25

Thriving in a Statistical World 25

Statistics: More than Just Numbers 26

Designing Appropriate Studies 28

Surveys (Polls) 28

Experiments 29

Collecting Quality Data 30

Sample, random, or otherwise 30

Bias 32

Grabbing Some Basic Statistical Jargon 33

Data 33

Data set 34

Variable 34

Population 34

Statistic 35

Parameter 35

Mean (Average) 36

Median 36

Standard deviation 36

Percentile 37

Standard score 37

Distribution and normal distribution 38

Central Limit Theorem 38

z-values 39

Margin of error 39

Confidence interval 40

Hypothesis testing 41

p-values 42

Statistical significance 42

Correlation, regression, and two-way tables 43

Drawing Credible Conclusions 44

Reeling in overstated results 44

Questioning claims of cause and effect 44

Becoming a Sleuth, Not a Skeptic 45

Unit 2: Number-Crunching Basics 47

Chapter 4: Crunching Categorical Data 49

Summing Up Data with Descriptive Statistics 49

Crunching Categorical Data: Tables and Percents 50

Counting on the frequency 50

Relating with percentages 52

Two-way tables: Summarizing multiple measures 54

Interpreting counts and percents with caution 55

Practice Questions Answers and Explanations 57

Whaddya Know? Chapter 4 Quiz 60

Answers to Chapter 4 Quiz 62

Chapter 5: Means, Medians, and More 65

Measuring the Center with Mean and Median 65

Averaging out to the mean 66

Splitting your data down the median 68

Comparing means and medians: Histograms 70

Accounting for Variation 74

Reporting the standard deviation 75

Being out of range 78

Examining the Empirical Rule (68-95-99.7) 79

Measuring Relative Standing with Percentiles 83

Calculating percentiles 83

Interpreting percentiles 85

Gathering a five-number summary 88

Exploring interquartile range 89

Practice Questions Answers and Explanations 90

Whaddya Know? Chapter 5 Quiz 97

Answers to Chapter 5 Quiz 98

Chapter 6: Getting the Picture: Graphing Categorical Data 99

Take Another Little Piece of My Pie Chart 100

Tallying personal expenses 100

Bringing in a lotto revenue 101

Ordering takeout 102

Projecting age trends 103