ADPR3510 Ch 13.ppt

ADPR3510 Ch 13.ppt - Chapter 13 Quantitative Statistics:...

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Chapter 13 (c) Guilford Press, 11
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Inferential Statistics (c) Guilford Press, 22 Tests whether results are truly the result as found or whether they occurred by chance Allows for testing of predictions Usually tests that account for 5% error or less (you are 95% confident that the variable differences due to an independent variable on a dependent variable were not by
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Probability of Error (c) Guilford Press, 33 One-tailed test Two-tailed test From: Primer of Public Relations Research, Second Edition, by Don W. Stacks. Copyright 2011 by The Guilford Press. All rights reserved.
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Statistical Significance (c) Guilford Press, 44 Testing hypotheses Answering Questions Specifying Significance Levels Type I and Type II Error Related to sample size If we are conservative, then we want minimal Type I error (false positive into the body of knowledge)
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Error Relationships Relationships are really: TRUE FALSE You find the Relationshi ps: TRUE No problem Type I error FALSE
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ADPR3510 Ch 13.ppt - Chapter 13 Quantitative Statistics:...

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