AP PSYCHOLOGY

Detailed explanation-1: -Inter-rater reliability (also called inter-observer reliability) measures the degree of agreement between different people observing or assessing the same thing. You use it when data is collected by researchers assigning ratings, scores or categories to one or more variables.

Detailed explanation-2: -Examiners marking school and university exams are assessed on a regular basis, to ensure that they all adhere to the same standards. This is the most important example of interobserver reliability-it would be extremely unfair to fail an exam because the observer was having a bad day.

Detailed explanation-3: -intra-observer (or within observer) reliability; the degree to which measurements taken by the same observer are consistent, inter-observer (or between observers) reliability; the degree to which measurements taken by different observers are similar.