Questions Answer only

Solutions Manual (Even Number Questions Answer only) Basic Statistics for the Behavioral Sciences

SEVENTH EDITION

Gary W. Heiman

D.J. Hendricks Richard T. Walls

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Answers to Even-Numbered Textbook Problems

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204 Answers to Even-Numbered Textbook Problems

© 2014 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part CHAPTER 1 Introduction to Statistics

• It refers to the symbols used for the mathematical operations performed and the answers

obtained.

• A transformation is a mathematical procedure for systematically converting a set of

scores into different scores.

• To make scores easier to work with and to make different kinds of scores comparable.

• A percentage is a proportion multiplied times 100.

• To organize, summarize, and communicate the IQ scores, and to draw conclusions about

what the scores indicate about intelligence.

• To transform a percentage to a proportion, divide the percentage by 100.

• a. Two decimal places
• Four decimal places
• Two decimal places
• Two decimal places

• X = 4.347 and Y = 3.333

16. Q = (3+5)(9+25) = (8)(34) = 272

18. D = (1.917)(3.742) = 7.17

• a. 0.30 b. 32.5% c. 33.33% d. 0.375 = 0.38

• a. (12/80)100 = 15%
• (0.40)80 = 32
• (0.075)80 = 6
• Because (0.005)80 = 0.4, and 0.4 of one person cannot fail an exam.

24.

CHAPTER 2 Statistics and the Research Process

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