PSYC 2002 Study Guide - Midterm Guide: Frequency Distribution, Fuel Tank, Statistic

• School: Carleton University
• Department: Psychology
• Course: PSYC 2002
• Professor: Donna Mailloux

Document Summary

Statistics: the term statistics is used to refer to methods for organizing, summarizing, and interpreting data. Inferential statistics: use sample data to draw inferences about populations. Correlational: examines relationships between variables by measuring two different variables for each individual. cannot produce a cause-and-effect explanation for the relationship. Experimental: examines relationships between variables by manipulating an independent variable to create different treatment conditions and then measuring a dependent variable to obtain a group of scores in each condition. The intent of the experimental method is to demonstrate a cause-and-effect relationship between variables. Non-experimental: uses a preexisting participant characteristic (such as male/female) or the passage of time (before/ after) to create the groups being compared. A discrete variable consists of indivisible categories, often whole numbers that vary in countable steps. A continuous variable consists of categories that are in nitely divisible and each score corresponds to an interval on the scale.