CSB345H1 Study Guide - Quiz Guide: Ejection Fraction, Bw Group, Analysis Of Variance
25 Jan 2014
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P ) value: one or more of the following explain a study"s observed results: the observed effects are real (but we can only assess this indirectly) 3 groups of 24 indiv are studied to compare a new diuretic, the standard drug, & placebo. Dependent variable (outcome of interest): urine output (ml/day; continuous variable) result was consistent w what was expected new drug was the most effective diuretic. Use anova (f-ratio is the test statistic") if we conclude that the result is not due to chance, but due to a true" effect (determined by. What is the probability that we will be wrong: p: the risk of getting a false positive error. The: assesses the size of the difference bw the 2 means (we can now simplify the calculations) Need to compare the amount of variability (difference bw the 2 group means) that is already inherent in the data to the standard error.
