PSY201H1 Study Guide - Comprehensive Final Exam Guide - Variance, Unimodality, Supreme Headquarters Allied Powers Europe
Document Summary
Statistics: set of mathematical procedures for organizing, summarizing, and interpreting information. Population: all individuals of interest in a study. Sample: set of individuals selected from pop. , usually represents the population of interest. Variable: a characteristic or condition that changes or has different values for different individuals. Datum / score / raw score: one measurement or observation. Data / data set: collection of measurements or observations. Parameter: a value, usually numerical, that describes a population; is usually derived from measurements of the individuals in the population (whole pop!) Statistic: a value, usually numerical, that describes a sample; is usually derived from measurements of the individuals in the sample (not whole pop. ) Descriptive statistics: statistical procedures used to summarize, organize, and simplify data (describe results) Inferential statistics: techniques that allow us to study samples, then make generalizations about the populations (interpret results) Sampling error: discrepancy between a sample statistic & the corresponding population parameter.
