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Biostats

Choosing a Statistical Test

QuestionAnswer
Describe one sample (Continuous Data from Gaussian Distribution) Frequency distribution. Sample mean. Min, Max, and Range, Percentiles, Sample SD
Inference about one population (Continuous Data from Gaussian Distribution) One-sample t-test
Compare two unmatched groups(Continuous Data from Gaussian Distribution) unpaired t-test
Compare two matched groups(Continuous Data from Gaussian Distribution) Paired t-test
Compare three or more matched groups(Continuous Data from Gaussian Distribution) One-way ANOVA, followed by multiple comparison tests
Compare three or more matched groups(Continuous Data from Gaussian Distribution) Repeated Measures ANOVA, followed by multiple comparison tests
Quantify association between two variables(Continuous Data from Gaussian Distribution) Pearson's correlation (R^2 close to 1 or 0?)
Predict one variable from another(Continuous Data from Gaussian Distribution) Linear regression. Nonlinear regression
Describe one sample(Continuous Data from Unknown Distribution) Frequency distribution. Sample Median. Min, max, range. Percentiles
Compare two unmatched groups(Continuous Data from Unknown Distribution) Mann-Whitney Test
Compare two matched groups(Continuous Data from Unknown Distribution) Wilcoxon's matched pairs test (matched pairs sign rank test)
Describe one sample(Time to event data) Kaplan-Meier survival curve. Median survival time. **
Inference about one population(Time to event data) Confidence bands around survival curve. CI of median survival. **
Compare two unmatched groups (Time to event data) CI of ratio of median survival time. CI of hazard ratio
Describe one sample(Binomial Data) Proportion
Inference about one population(Binomial Data) CI of proportion
Compare two unmatched groups(Binomial Data) Fisher's Exact Test
Compare two matched groups (Binomial Data) McNemar's test
Compare 3 or more unmatched groups(Binomial Data) Chi-square test
Created by: HugsAndKisses
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