PSYC08H3 Chapter 1: stats CHAPTER 1.docx
Document Summary
Statistics: refers to a set of mathematical procedures for organizing, summarizing and interpreting information. Population: the set of all the individuals of interest in a particular study. Sample: a set of individuals selected from a population, usually intended to represent the population in a research study. Parameter: a characteristic that describes a population; a value, usually, numerical, that describes a population. A parameter may be obtained from a single measurement, or it may be derived from a set of measurements from a population --- typically every population parameter has a corresponding sample statistic. Sample statistic: a characteristic that describes a sample. Data set: is a collection of measurement or observations. Datum: is a single measurement or observation and is commonly called a score or raw score. 2 statistical procedures to organize and interpret data: descriptive statistics. Consists of statistical procedures that are used to simplify and summarize data.
