Cronbach's Alpha Coefficient

Cronbach's Alpha Coefficient is a statistical measure used to assess the reliability or consistency of a set of survey questions or test items that aim to capture a specific concept, such as general knowledge. It indicates how well the items in a questionnaire work together to measure the same underlying idea. A higher alpha value, typically ranging from 0 to 1, suggests that the questions are closely related and produce consistent results. An alpha of 0.70 or above is generally considered acceptable for research purposes, indicating that the scale is reliable for assessing the intended construct.