PSYC 2002 Lecture Notes - Lecture 2: Statistical Inference, Random Effects Model, Descriptive Statistics
19 Jan 2019
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Document Summary
Statistics is a research tool for evaluating data. Data : a set of scores or measurements. Statistics are used to evaluate the results of experiments; did the data support the hypothesis. Quantify behaviour to enable more precise statements about data and its theoretical implications. Statistics refers to a range of techniques and procedures for analyzing, interpreting, displaying, and making decisions based on data (lane et al. Inferential statistics : enable inferences to be drawn from data. If the individuals were randomly assigned to the groups then it is possible to choose between these alternatives. Sample : subset of individuals from a larger group. Population : the set of all individuals that have some characteristic. Generalization from sample to sample requires a random sample. Each member of the population has an equal chance of being selected. Selection of any one member is independent of the selection of other members. The size of the sample is important, bigger is better.
