PSYO 1021 Lecture Notes - Lecture 6: Syphilis, Confounding, Belmont Report
24 Dec 2015
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The sample should be both random (every person has an equal probability of being selected) and representative (accurately reflects the population). Range set: arithmetic average of a data set. Add all the ____ together and divide by the total number of them: a score that separates the upper half from the lower half in a data set. Line up in a row and pick the middle number if 2 middle numbers, average them: most frequently occurring score in a data set. Find the number that occurs most often: the difference between highest and lowest score in a data. Find the lowest and highest number, and take the difference. Measures of how much scores in a data set vary around the. Most common way to represent variability in a data set. Presumably, you want to make a claim that a particular effect is. Remember, we always try to falsify claims. So, we are constantly comparing to null hypotheses:
