SOC202H1 Lecture Notes - Lecture 7: Test Statistic, Statistical Hypothesis Testing, Statistical Significance
Document Summary
Exactly the same steps of the one sample mean with small differences: differences between one and two sample- test: Step 1: in addition to samples selected according to epsem principles, samples must be selected independently (independent random sampling) Independent sample when all members of samples have same probability of being chosen and their probability of being chosen does not depend on each other. Two groups we compare are independent of each other. Example: we compare the mean earning of women and men. However, the probability of women to get selected into the sample must be independent of the selection probability of men. Dependent sample: (do not cover in class) example would be conducting an achievement test to the same sample of students at the beginning and end of the year. Level of measurement: interval ratio for two means, for proportion: nominal. Sampling distribution: small sample (combined samples two groups together ,100 t- distribution.
