SOC222H5 Lecture Notes - Statistical Hypothesis Testing, Null Hypothesis, Situation Two
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Terms to know statistical significance significance level research hypothesis null hypothesis type i error type ii error chi-square expected frequencies observed frequencies (counts) degrees of freedom. Situation: 2 category variables: either nominal (such as religion) or ordinal (logical ordered fashion), percentage difference: measuring effect sizes, problem: we do not know what is the population after drawing a sample. For example: 0. 35: answer: a confidence interval around a population estimate. But only looked at one variable: typically 95, we"re 95% sure that the population estimate falls within this interval. If we drew all possible samples of size n, 95% of them would give a population estimate within this interval. Procedure #2: statistical significance: question: is there a relationship in the population, question is different here than the first procedure. Asking whether it exists: does what we found in the sample exist in the population, answer to this question: statistical significance of the relationship.
