Math & Engineering

. Research Design-LDR 280.PPT

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. Research Design-LDR 280.PPT
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  1 RESEARCH DESIGN   2 –   What   --   What was studied? –   What about   --   What aspects of   the subject were studied?   –   What for   --   What is/was thesignificance of the study? –   What did prior lit./research say? –   What was done   --   How was thestudy conducted? –   What was found?   –   So what?   –   What now? 1. Introduction,Research Problems/Objectives, & Justification2. Literature Review3. Methodology (Research sample, datacollection, measurement,data analysis)4.Results & Discussion 5.Implications6. Conclusions and Recommendations forFuture Research PROCESS OF DESIGNING AND CONDUCTING A   RESEARCH PROJECT:  3 RESEARCH DESIGN  RESEARCH DESIGN   refers to the plan, structure, and strategy of research   --   the   blueprint   that will   guide the research process   . Developing ResearchHypothesesIntriguing Observation,Intellectual CuriosityDefining ResearchProblem & ObjectivesTesting Hypo.:Data Analysis &InterpretationSampling DesignRefinement of theory(Inductive Reasoning) Data Coding,AndEditingDeveloping OperationalDefinitions for Research VariablesBuilding the Theoretical Framework and the Research ModelData CollectionMore Careful Studyingof the Phenomenon THE PROCESS OFEMPIRICAL RESEARCH  4 RESEARCH DESIGN  CONCLUSION VALIDITY   refers to the extent of researcher’s ability to   draw accurate conclusions   from the research. That is, the degree of a study’s: a)Internal Validity   —   correctness of conclusions   regarding the relationships among variable   s examined    Whether the research findings accurately reflect how the research   variables are really connected to each other. b)External Validity   –   Generalizability of the   findings to the intended/appropriate population/settin   g    Whether   appropriate subjects   were selected for conducting the study RESEARCH DESIGN   :   The    blueprint/roadmap   that will guide the research. The test for the   quality of a study’s research design   is the study’s   conclusion validity   .  5 RESEARCH DESIGN • Variance of the INDEPENDENT & DEPENDENT   variables (   Systematic Variance   ) • Variability of potential NUISANCE/EXTRANEOUS/   CONFOUNDING variables (   Confounding Variance   ) • Variance attributable to ERROR IN MEASUREMENT   (   Error Variance   ). How? How do you achieve   internal and external validity   (i.e., conclusion validity)?  By effectively   controlling 3 types of   variances   :
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