SOC202H1 Chapter Notes -Normal Distribution, Standard Deviation, Human Behavior
Document Summary
Ch6 probability theory and the normal probability distribution. Probability theory analysis & understanding of chance occurrences: physical nature cyclical, follow strict scientific laws predictable, human behavior less predictable. Using the normal curve as a probability distribution. Z-score how many standard deviation away from the mean a raw (x- score) lies. Social/behavioral scientists req. incl. degrees of accuracy. Specific auc of normal distribution = probability of occurrence of any: many statistic predication based on normal curve single score falling in its domain. Rule 1: probability in range between 0 and 1: 0 = event cannot happen, 1 = event must happen. Rule 3: adjust for joint occurrence (general addition rule) For normal distribution: the follow are equivalent: 1. Proportion of cases between two scores: 2. The auc between these two scores: 3. Probability of randomly selecting a case between these scores. A distributional interpretation that describes the results in relations to the distribution of scores in a population or sample: 2.
