PSYCH 2220H Study Guide - Midterm Guide: Statistical Significance, Research Question, Point Estimation

• School: Ohio State University
• Department: Psychology
• Course: PSYCH 2220H
• Professor: Cravens- Brown Lisa Marie

Document Summary

Exam 2 lecture notes: sampling and probability, building blocks of inferential stats. Outcome of one trial does not effect outcome of another trial. Probability or proportion multiplied by 100: calculating expected relative frequency. Probability of a or b = sum of separate probabilities. Implies that can"t have both at same time: joint probabilities. Probability of co-occurrence of 2 or more events. Probability of joint occurrence of 2+ independent events = product of individual probabilities. Probability one event will occur given that another has occurred. Probability a will happen given that b has already occurred. Given a true null hypothesis, the probability of obtaining our sample results is ______ Likely there is no effect: is set by researcher (standard = 0. 05, is set by researcher. Normal curve, standardization and z scores: normal curve. Different means ( ) and standard deviations ( : standardization. Positive z score = above mean; negative z score = below.