CRM 2303 Lecture Notes - Lecture 4: Operationalization, Confounding, Pg. 99
23 Nov 2017
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Importance the bell-shaped curve: to identify outliers and understand their influence. Terminology associated with validity and reliability: validity is the ability to accurately measure what one is intending to measure (pg. 82: operationalization is the process of taking abstract concepts and converting them into measurable variables, composite measure is a collection of questions to better measure a research concept (commonly called a scale) (pg. Intraobserver reliability occurs when two separate researchers at different times observe the same results or behaviours (pg. 85): the greater the variation or the differences between reponses, the lower the reliability, correlation coefficient is the statistical technique used to measure this variation. Interitem reliability is the process of measuring concepts or items in multiple ways to help ensure reliability of the measure (pg. If the instrument is reliable, then the results will be the same regardless of the question or answer order.
