PSYC 2002 Study Guide - Final Guide: Normal Distribution

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Statistics: used to describe the particular sample of data that you have, used to organize, summarize and present data. How much variability is in your data: how tall men and women are, average grades of psychology majors vs. math majors, salaries in geographical regions. Numerical values that summarize measurable characteristics of a population. Represented by greek letters (e. g. , , , ) Numerical values that summarize measurable characteristics of a sample. Typically, statistics are used to generate estimates of population parameters. These estimates are not perfect, due to sampzg error the discrepancy (amount of error) that exists between a sample statistic and the corresponding population parameter. Research design: a systematic plan for collecting data in order to provide answers to specific questions: experimental method (experiment) Non-experimental methods (studies: descriptive research, correlation research, quasi-experimental research. Any measurable characteristic of a person, environment, or experimental treatment that varies.