CSB345H1 Study Guide - Statistical Hypothesis Testing, Descriptive Statistics, Test Statistic

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The role of chance: studies are done to advance & inform biomedicine/healthcare, statistical tools enable 2 study tasks: relevant data needs to be collected in these studies. Does it indicate a real effect or real difference this can"t be determined directly, so we examine other possible explanations like chance to see what role they might play. Need to identify & use the applicable statistical test, which returns the probability (p) of study results as extreme as these arising by chance. Which statistical test? level of measurement of outcome variable: continuous, dichotomous, discrete, nominal, ordinal type of comparison/study design: 2 groups or 2+ (independent) groups compared, . Type of data quantitative quantitative dichotomou s nominal dichotomou s. 2. there truly is no effect (though we can"t determine this directly) there is a true effect, but the study didn"t detect it either bc of flawed study design/conduct (ex. bias, confounding, selection error)

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