Lecture_3_Notes_Pages

Lecture_3_Notes_Pages - Slide 1 Science and Statistics...

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Unformatted text preview: Slide 1 Science and Statistics Tuesday, January 20 ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 2 What is science? ¡ Science is useful! SCIENCE ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 3 What is science? ¡ Goals: understanding, prediction, and control ¡ Features: ¡ Open ¡ Communicable ¡ Public (peer review) ¡ Dependent on data ¡ Disinterestedness/objectivity ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 4 Steps in the scientific research process Develop a research idea Convert into hypotheses Define variables Design Study Conduct Study Analyze Data Report Results ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 5 Develop a research idea ¡ Can come from observation of a problem ¡ Can come from theory ¡ A theory is essentially a set of statements about the relationships between variables that explains WHY they are related. ¡ Theories provide meaning, guide future research, and produce testable hypotheses. ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 6 Convert into hypotheses ¡ Hypothesis: prediction about relationships among variables of interest ¡ e.g., attendance in class will be positively related to final grade in the course ¡ Scientific experiments attempt to disprove hypotheses ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 7 Define variables ¡ Based on theory or relevant literature, define variables of interest and decide how to measure them ¡ Use accepted measures or develop new measures ¡ Next lecture is all about measurement!...
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Lecture_3_Notes_Pages - Slide 1 Science and Statistics...

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