PSY 340 Study Guide - Midterm Guide: Standard Deviation, Type I And Type Ii Errors, Central Limit Theorem
Document Summary
This is just a guide, read the assigned chapters. Also, review the problems that we solved in class. Keep in mind that all statistics is partially-cumulative (i. e. , you will see concepts covered before in other chapters such as mean, standard deviation etc. z-scores for individual scores (meaning, calculation for sample and population) Finding proportions or probabilities for specific z-score values (identifying proportions above/below z-scores using the unit-normal table). Identifying probabilities and proportions for scores from a normal distribution: example: it is known that iq scores form a normal distribution with = 100 and = 15. Given this information, what is the probability of randomly selecting an individual with an iq score less than 120? (this example is presented in the textbook, pp. Standardizing an entire distribution (impact on shape, mean, sd) Comparing scores across different distributions (using z-scores to make comparisons) Other standardized distributions based on z-scores (transforming z-scores to a distribution with a predetermined and )
