Essentials of Statistics for The Behavioral Sciences

Author(s): Frederick J Gravetter, Larry B. Wallnau, LoriAnn B. Forzano
Difference between 9th and 8th editions
Side by side comparison of table of contents helps to figure out the most significant changes.

Key differences between 9th and 8th editions
 Period between current and previous editions: 4 years (2017 vs 2013).
 Gravetter & Wallnau Essentials of Statistics was first published in 1999.
 Many chapters in the The Ninth edition have been shortened and simplified.
 All sections in the text begin with a list of Learning Objectives and end with a Learning Check questions.
 Ninth Edition provides updated research examples, fresh realworld examples, and extensively revised endofchapter problems.
 Chapter 4 has separate section on proof of unbiasedness of sample variance.
 Chapter 5 includes new section in on other relationships between zScores, X, the mean, and standard deviation.
 New section in Chapter 11 compares repeatedmeasures design vs independentmeasures design.
 Chapter 13 explains repeatedmeasures and twofactor analysis of variance in more details.
9th Edition of
Essentials of Statistics for The Behavioral Sciences
eBook, 589 pages
eBook ISBN: 9781337515429
Published by: Cengage Learning, January 01, 2017
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 $76.03 
Paperback, 589 pages
ISBN10: 1337098124
ISBN13: 9781337098120
Published by: Wadsworth Publishing, January 01, 2017
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8th Edition of
Essentials of Statistics for the Behavioral Sciences
eBook, 648 pages
eBook ISBN: 9781285415574
Published by: Wadsworth Publishing, February 01, 2013
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 Available

 $25.16 
Paperback, 648 pages
ISBN10: 1133956572
ISBN13: 9781133956570
Published by: Cengage Learning, January 01, 2013
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International Edition
Paperback, 656 pages
ISBN10: 1285051246
ISBN13: 9781285051246
Published by: Wadsworth Publishing Co Inc, January 31, 2013
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7th Edition of
Essentials of Statistics for Behavioral Science
Cengage Advantage Books
Loose Leaf, 656 pages
ISBN10: 0495910554
ISBN13: 9780495910558
Published by: Cengage Learning, January 01, 2010
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 $2,678.93

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Paperback, 656 pages
ISBN10: 049581220X
ISBN13: 9780495812203
Published by: Cengage Learning, January 01, 2010
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 $45.00

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Saving advice
Paperback
 The new 9th edition costs $60.52 more then used book.
 8th edition is $80.15 cheaper then the 9th edition.