Health Sciences 2801A/B Chapter Notes - Chapter 5: Observational Error, Confidence Interval

• School: Western University
• Department: Health Sciences
• Course: Health Sciences 2801A/B
• Professor: Christopher Lee

Document Summary

Unsystematic error form of measurement error that increases or decreases individual scores by an unpredictable amount. Systematic bias form of measurement error that changes every score in the same direction and by a constant amount. The consistency coefficient and agreement coefficient are used to assess the equivalence of scores that are obtained when using different versions of a measurement procedure. In all of the cases, a consistency coefficient or agreement coefficient can be calculated to assess the degree to which two versions yield equivalent scores. A consistency coefficient and agreement coefficient are two methods that assess the degree of equivalence in scores that are obtained using two versions of a measurement procedure. Consistency coefficient indicates the degree to which scores differ as a result of unsystematic error. Agreement coefficient indicates the degree to which scores differ as a result of a combination of unsystematic error and systematic bias.