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UCR SOC 005 STAT SPR 2010 Session 21 V4

# UCR SOC 005 STAT SPR 2010 Session 21 V4 - THE UNIVERSITY OF...

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Unformatted text preview: THE UNIVERSITY OF CALIFORNIA RIVERSIDE The University of Mississippi Institute for Advanced Education in Geospatial Science Session 21 Friday, 14 May 2010 David Swanson Watkins 1223 [email protected] SOCIOLOGY 005 STATISTICAL ANALYSIS THE UNIVERSITY OF CALIFORNIA RIVERSIDE The University of Mississippi Institute for Advanced Education in Geospatial Science Today’s Schedule Lecture & Discussion: Hypothesis Testing, Part 1. THE UNIVERSITY OF CALIFORNIA RIVERSIDE The University of Mississippi Institute for Advanced Education in Geospatial Science Lecture & Discussion Lecture & Discussion: Hypothesis Testing, Part 1 THE UNIVERSITY OF CALIFORNIA RIVERSIDE The University of Mississippi Institute for Advanced Education in Geospatial Science Hypothesis Testing A highly structured system based on a COMPARISON that is used to guide decision-making under conditions of uncertainty, due to sampling THE UNIVERSITY OF CALIFORNIA RIVERSIDE The University of Mississippi Institute for Advanced Education in Geospatial Science Hypothesis Testing: The Process The frame of reference, you’ll use to evaluate what you think is true, a “falsifiable” condition What you think is true, your research hypothesis the probability the observed result is due to chance, the probability of rejecting Ho when it is true the probability you’ll observe an “effect” when it occurs, the probability of rejecting Ho when it is false Null Null hypothesis, Ho hypothesis, Ho Alternative Alternative hypothesis, Ha hypothesis, Ha alpha level alpha level power power THE UNIVERSITY OF CALIFORNIA RIVERSIDE The University of Mississippi Institute for Advanced Education in Geospatial Science Rejecting Ho when it is true Failing to reject Ho when it is false The alpha level (you set in advance of the test) represents a limit on the probability of committing a TYPE I error (rejecting true Ho) The probability of committing a TYPE II error (not rejecting false Ho) TYPE I ERROR TYPE I ERROR TYPE II ERROR TYPE II ERROR alpha level alpha level Beta Beta THE UNIVERSITY OF CALIFORNIA RIVERSIDE The University of Mississippi Institute for Advanced Education in Geospatial Science Statistical Testing: The Four Components the number of units (e.g., people) accessible to study the salience of the program relative to the noise the odds the observed result is due to chance the odds you’ll observe a treatment effect when it occurs sample size sample size effect size effect size alpha level alpha level power power THE UNIVERSITY OF CALIFORNIA RIVERSIDE The University of Mississippi Institute for Advanced Education in Geospatial Science...
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• Spring '08
• BURKE
• Sociology, Statistical hypothesis testing, advanced education, GEOSPATIAL SCIENCE, CALIFORNIA RIVERSIDE, UNIVERSITY OF CALIFORNIA RIVERSIDE, University of Mississippi Institute for Advanced Education

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UCR SOC 005 STAT SPR 2010 Session 21 V4 - THE UNIVERSITY OF...

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