COM 300 Study Guide - Midterm Guide: Type I And Type Ii Errors, Test Statistic, Statistical Hypothesis Testing
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Exam 3 com 300 study guide. Inferential statistics and descriptive statistics - difference?x. Statistical significance - what makes a result statistically significant?x. One tailed vs two tailed hypothesis test- when to use what?x. 4 steps of hypothesis testing - identify and define the steps. x. Compare calculated test statistic to your critical valuex. Formula for chi squared will be provided but know the labels in the formula. Difference between expected and observed outcome value. Calculating and interpreting chi-squared value to test hypothesis. Know when to use t-test statistic vs. other test statistics (e. g. , what kinds of variables are used for t-test?) Calculate t-test (formula will be provided, but you must know how to use it). Be able to recognize positive/negative/no relationships between variables when given a scatterplot. Know properties of the correlation coefficient (e. g. , doesn"t matter if units of measurement are changed, only measures linear relationships). Using the formula from lecture to calculate the correlation from z scores.
