PSY201H1 Chapter Notes - Chapter 5: Percentile Rank, Standard Deviation, Standard Score
Document Summary
Psy201: chapter 5: the normal curve and standard scores. + a very important distribution in behavior sciences. 1. many of the variables measured in behavioral science research have distributions that quite closely approximate the normal curve (ie: height, weight, intelligence and achievement are few examples) 2. many of the inference tests used in analyzing experiments have sampling distributions that become normally distributed with increasing sample size. (ie: sign test & mann-whitney u test) 3. many inference tests require sampling distributions that are normally distributed. The z test, student"s t test, and the f test are examples of inference tests that depend on this point occurs in conjunction with inferential statistics. much of importance of normal curve. The normal curve: normal curve is a theoretical distribution of population scores. + a theoretical curve and is only approximated by real data. + bell-shaped curve that is described by equation: curve has two inflection points, one on each side of the mean.
