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Study Guide Test _2

# Study Guide Test _2 - Psyc 227 Introduction to Statistics...

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Psyc 227 Introduction to Statistics Dr. Fairchild Review Guide for Exam #2 Section 1: Linear Transformations & the Normal Curve for Scores 1) What is meant by transformation of a variable? Given a linear transformation, how do the new scores relate to the old scores? 2) Know how to use the z-score formula with individual scores. 3) Know distributional properties of the z-score distribution. 4) What is a probability distribution? 5) Is there only one normal curve? 6) What are the characteristics of a normal curve? 7) Know how to read the z-score table. 8) Know how to compare scores from different scales using z-scores. Section 2: Sampling Distributions & z-score problems with means 9) Be able to define the sampling distribution of means in words. 10) What is the relationship of the shape of the population distribution to that of the sampling distribution of means when the population distribution is normal? Non-normal? 11) Know the central limit theorem.

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