Lecture 13 Outline of Last Lecture I Terminology of Hypothesis Testing Psych 311 1nd Edition Outline of Current Lecture I Terminology of Hypothesis Testing II Non Directional vs Directional Test III Review for Inferential Process Current Lecture I Terminology of Hypothesis Testing Statistically Significant refers to any time you reject Ho Non significant refers to any time we fail to reject Ho never say insignificant II Non Directional vs Directional Test Non Directional Test two tailed can t predict whether the effect of IV will cause M or M Distribute equally between the two tails extremes Directional Test one tailed can predict that IV will cause M or M determined from theory Put all into either one or the other tail Symbols for non directional hypothesis test Ho M H1 M indicates Non Directional Test These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Symbols for directional hypothesis test Ho M H1 M or but not both M or indicates Directional Test III Review for Inferential Process 1 We ask research question about population hypothesis states at population level 2 Take representative sample from pop to use to answer research question 3 But taking a sample introduces sampling error we can quantify sampling error using standard error M n 4 We answer our research question using sample through hypothesis testing hypothesis test gives final answer 5 Generalize what we learned from sample back to population what is true of our sample must be true of our population 6 There s a chance that the difference we see in our sample can be due to sampling error or IV use to determine likelihood of either of these
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