Exam 2 Study Guide da-1

Exam 2 Study Guide da-1 - Psych 1167 Exam 2 Review Guide...

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Psych 1167 Exam 2 Review Guide Chapters 5 and 6 1. What do measures of variability tell us about a distribution of data? 2. Be able to look at two sets of data (numbers or graphs) and identify which one has the  most variability 3. Can two different data sets have the same mean but different levels of variability? 4. Be able to define each of the 5 primary measures of variability.  What does each  represent?  Also, be able to calculate each of them given a set of raw scores. a. Range b. Interquartile Range (IQR) – can use the approximation method taught in class c. Semi-IQR d. Variance e. Standard Deviation 5. What is the main drawback of using the range as a measure of variability? 6. What is the main advantage of the IQR, compared to the range? 7. What is a deviation score?  8. What is the “sum of squares”? 9.
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Exam 2 Study Guide da-1 - Psych 1167 Exam 2 Review Guide...

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