PSYC 60 Chapter Notes - Chapter 6: Simple Random Sample, Standard Deviation, Percentile Rank
Document Summary
6-1 introduction to probability: inferential procedures typically built around the concept of probability; defines relationship between population and sample. 6-1a defining probability: probability: a fraction or proportion for any specific outcome of all the possible outcomes, probability of a=number of outcomes classifies as a/total number, probability defined as p followed by specific outcome in parentheses. Contained in a range from 0 to 1 (0 to 100%) Sampling with replacement: ensures that probabilities don"t change from one selection to the next. 6-2a the unite normal table: unit normal table: lists proportions of the normal distribution for a full range of possible z-score values, consists of 4 columns. Column a: lists z-score values corresponding to different locations in a normal distribution. Column b: proportion of the distribution in the body. Column c: proportion of the distribution in the tail (larger portion) (smaller portion)
