POL101Y1 Lecture Notes - Lecture 8: Exact Test, Ronald Fisher, Causal Inference

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Sir ronald fisher, father of modern statistics. Experiment whether mariol bristol could tell if the milk or tea was put in first in the cup. Fisher made 8 cups of tea, half the milk put in first, other half, tea in first. Fisher and bristol didn"t know the order. Using the fisher exact test, we know that the probability of her getting all of them correct by chance was 1 in 70. Experiments need treatment/conditions: stimuli people are exposed to at some point of not exposed to. Assignment to treatment or control/comparison groups of random and the process of randomization is known. A treatment is something that is applied to some people or not to others, or to some times and not others. We put some subjects in treatment and some in control. For an experiment to be complete, we need to measure the results. What we want to measure are causal effects.

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