PSYCH 2220 Chapter Notes - Chapter 7: Null Hypothesis, Statistical Hypothesis Testing, Test Statistic
10 Feb 2018
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Ch 7 - hypothesis testing w/ z tests. Z table lets you state and test hypotheses by standardizing diff kinds of observations. Step 1) convert a raw score and a z score. Step 2) look up a given z score on the z table to find the % of scores b/t the mean and that z score. Z table can also be used to determine %s and z statistics for distributions of means. Step 1) convert to a z statistic using the mean and standard error that we just calculated. Step 2) we determine the % below this z statistic. Assumptions are the characteristics that we ideally require the pop from which we are sampling to have so that we can make accurate inferences. The assumptions for the z test also apply to other hypothesis tests, like parametric. Tests, inferential statistical analysis based on a set of assumptions about the pop.
