NFSC 345 Lecture Notes - Lecture 5: Null Hypothesis, Confounding, National Health And Nutrition Examination Survey
1 Sep 2016
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How to read a scientific article critically: know why you are reading the paper. What do i need to know: read the title, then the abstract. If it appears to answer your questions, keep on: read the introduction and conclusion, read the discussion, read the methods and results. Source of the information is critical: most reliable sources are peer-reviewed publications, peer-review: process by which the research is reviewed prior to publication, non-peer reviewed journals rely on the judgment of the editors. The goal of a research experiment: answer the question(s) posed. Conduct an experiment to determine if the effect of the treatment has more effect on the outcome than what would be expected due to chance. Key considerations in a research experiment: hypothesis: change only a limited number of independent variables in each experiment. Changing many independent variables can lead to confusing results: variables: Independent: what is varied/changes for the experiment, e. g. , frequency of eating vegetables.
