Hypotheses | Statistical Significance | Type I And Type Ii Errors

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Problem Identification and Hypothesis
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  1  Questions, Questions, Variables, and Variables, and HypothesesHypotheses 2/21/062/21/06  2 ReviewReview  What are research questionsWhat are research questions  What are variablesWhat are variables  !e nition!e nition  #unction#unction  $easure%ent &cale$easure%ent &cale  3 HypothesesHypotheses  '(, now that we )now how to set '(, now that we )now how to set up a research pro*ect by posin+ up a research pro*ect by posin+ research questions and labelin+ research questions and labelin+ variables, it is ti%e to %ove on to a variables, it is ti%e to %ove on to a %ore or%al way o structurin+ and %ore or%al way o structurin+ and interpretin+ research- interpretin+ research-  4 Hypotheses !e nitionsHypotheses !e nitions  Hypotheses are predictions about the Hypotheses are predictions about the relationship a%on+ two or %ore relationship a%on+ two or %ore variables or +roups based on a theory variables or +roups based on a theory or previous research .itten+er, 200or previous research .itten+er, 200  Hypotheses are assu%ptions or Hypotheses are assu%ptions or theories that a researcher %a)es and theories that a researcher %a)es and tests- tests-  Why are hypotheses i%portantWhy are hypotheses i%portant
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