PSYC 121 Lecture Notes - Lecture 1: Statistical Inference, Ap Psychology, Descriptive Statistics
Document Summary
Place this in your unit 1 notes subfolder. For ap psychology is it important to focus on the concepts involved with statistical reasoning and how these can help us understand what goes on in the real world: correlation coefficient, descriptive statistics, inferential statistics. Statistical significance : this concept is part of inferential statistics; you are trying to reach conclusions that extend beyond just describing the data. If we have results (means) from two groups, before we infer causation we must ask the question: We recruit 40 people and give (random assignment) We give them a brief reaction time test and record the results. (dv) We have just conducted an experiment; this is the only way to show a definite cause-effect (causation) relationship. There is a difference, but . you don"t know if that difference was due to your iv (caffeine) or just luck (chance). You need to determine if these results are statistically significant.
