Using data from a 1950’s study, determine whether the polio vaccine was effective in a cohort study, and, if it was, quantify the degree of effectiveness. Key ideas: Relative risk, observational study, cohort study, randomized experiments.
JMP features demonstrated:
Analyze > Distribution
Statistical/graphical tools used:
Bar charts, two-sample proportions test, relative risk, two-sided Pearson and likelihood ratio tests, Fisher's exact test, and the Gamma measure of association.