Reliability of test scores4/12/2023 High responses for one question do not suggest that participants rated the other items highly. This consistency indicates the measurements are reliable and the items might measure the same characteristic.Ĭonversely, low values indicate the set of items do not reliably measure the same construct. For example, when participants give a high response for one of the items, they are also likely to provide high responses for the other items. High Cronbach’s alpha values indicate that response values for each participant across a set of questions are consistent. Higher values indicate higher agreement between items. Cronbach’s alpha quantifies the level of agreement on a standardized 0 to 1 scale. Use this statistic to help determine whether a collection of items consistently measures the same characteristic. Cronbach’s alpha coefficient measures the internal consistency, or reliability, of a set of survey items.
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