Jesus Salcedo - SPSS Statistics For Dummies

SPSS Statistics For Dummies, 4th Edition

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Copyright 2020 by John Wiley & Sons, Inc., Hoboken, New Jersey

Published simultaneously in Canada

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Library of Congress Control Number: 2020941201

ISBN 978-1-119-56083-8 (pbk); ISBN 978-1-119-56087-6 (ebk); ISBN 978-1-119-56082-1 (ebk)

1. Chapter 1
2. Chapter 2
3. Chapter 7
4. Chapter 9
5. Chapter 10
6. Chapter 14
7. Chapter 15
8. Chapter 16
9. Chapter 18
10. Chapter 19
11. Chapter 22
12. Chapter 27

1. Chapter 2
2. Chapter 3
3. Chapter 4
4. Chapter 5
5. Chapter 6
6. Chapter 7
7. Chapter 8
8. Chapter 9
9. Chapter 10
10. Chapter 11
11. Chapter 12
12. Chapter 13
13. Chapter 14
14. Chapter 15
15. Chapter 16
16. Chapter 17
17. Chapter 18
18. Chapter 19
19. Chapter 20
20. Chapter 21
21. Chapter 22
22. Chapter 23
23. Chapter 24
24. Chapter 25
25. Chapter 26
26. Chapter 28
27. Chapter 29
28. Chapter 30

Good news! You dont have to know diddlysquat about the math behind statistics to be able to come up with well-calculated conclusions and display them in fancy graphs. You wont be doing any calculations by hand. All you need is the IBM SPSS Statistics software and a bunch of numbers. This book shows you how to type the numbers, select options in the menus, and produce brilliant statistics. And interpret them properly, too! It really is as simple as that.

Some sections of the book are written as stand-alone tutorials to make it easy for you to get into whatever youre after. After youre up and running with SPSS, you can skip around and read just the sections you need. You really dont need to read straight through the entire book. However, the book's chapters are organized in parts, and it's generally a good idea to read the chapters in a part in sequence. And you should start with if you are brand new to SPSS.

This book is not about math. Its about statistics. You dont derive anything. You dont do any math by hand or look up numbers in statistical tables. You wont find one explanation of how calculations are performed under the hood. This book is about the things you can do to command SPSS to calculate statistics for you. You can avoid all of those fancy formulas with lots of sigmas in them and still use SPSS to produce some nifty stats!

However, if you decide to study the techniques of statistical calculation, youll be able to understand what SPSS does to produce numbers. Your main advantage in understanding the process to that degree of detail is that youll be able to choose a calculation method that more closely models the reality youre trying to analyze. Although SPSS rescues you from the stress that some associate with manual calculations, it still leaves it up to you to interpret the results. We spend a lot of pages on carefully preparing you for that responsibility.

Throughout the book are examples that use data stored in files. These files are freely available to you. Some files are installed with IBM SPSS Statistics in the SPSS installation directory, which is \Program Files\SPSS (unless you chose another location during installation). Other files are available via the Welcome dialog when you launch SPSS. Most of the files, however, were designed for this book and are available on the book's companion website (see for more information). In every case, the files were carefully curated to demonstrate some specific capability of SPSS.

And a technical note: The official name of the product is IBM SPSS Statistics. Throughout this book, we refer to it simply as SPSS. Outside this book, that shortcut can be risky because other related products are also called SPSS notably, IBM SPSS Modeler, which, though powerful and part of the same brand, is not the subject of this book.

The authors wrote this fourth edition using IBM SPSS Statistics version 27. The technical editor checked all tasks against his concurrent version of SPSS Statistics Subscription and the instructions were consistent on both platforms. The third edition of this book was written using IBM SPSS Statistics version 23. Even if you use a version of SPSS prior to version 27, we urge you to use this fourth edition because its more than 100 pages of new content better prepare new users and meet the needs of intermediate users, as well as cover statistical analytic procedures to a much greater extent.