PSYC 2002 Study Guide - Operational Definition, Bar Chart, Repeated Measures Design
Document Summary
Chapter 1: an introduction to statistics and research design. Statistics is a research tool for evaluating data: Data: is a set of scores or measurements. Quantify behaviour about data and its theoretical implications. Summary of measurements (ex: average: descriptive statistics. Organizes, summarizes and communicates a group of numerical observations: inferential statistics. Uses sample data to make general estimates about the larger population. Enable inferences to be drawn from data. ** descriptive statistics summarize numerical information about a sample. Inferential statistics draw conclusions about the broader population based on numerical information from a sample. If the individuals were randomly assigned to the groups then it is possible to choose between these alternatives. Generalization: would a set of results hold if another group of participants were used: sample- subset of individuals from a larger group, population- the set of all individuals that have some characteristic. A sample: is a set of observations drawn from the population of interest.
