PSYCH 2220H Chapter Notes - Chapter 7: Statistical Hypothesis Testing, Null Hypothesis, Dependent And Independent Variables
19 Aug 2016
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Chapter 7: hypothesis testing with z tests: the z table, raw scores, z scores, and percentages. 68% scores fall within one z score of mean. Look up given z score on z table to find percentage of scores between the mean and that z score. Scores at least as extreme (in both directions: the z table and distributions of means. Convert z statistics using mean and standard error that just calculated. The assumptions and steps of hypothesis testing: the three assumptions for conducting analyses. Characteristic that we ideally require the population from which we are sampling to have so that we can make accurate inferences. Inferential stats analysis based on set of assumptions about the population. Inferential stats analysis not based on set of assumptions about population. Distribution of population of interest must be approximately normal. Hypothesis test is one that produces fairly accurate results even when data not meet some assumptions: the six steps of hypothesis testing.
