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Jan 18,  · Cronbach's alpha examines reliability by determining the internal consistency of a test or the average correlation of items (variables) within the test. In Stata, www.komsadmin.ru command conducts the reliability test. For example, suppose you wish to test the internal reliability of ten variables, v1 through v You could run the following.

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Cronbach’s alpha coefficient measures the internal consistency, or reliability, of a set of survey items. Use this statistic to help determine whether a collection of items consistently measures the same characteristic. assessment instruments, and test scores. Data can be continuous but will often be Likert and binary values. The. Cronbach’s alpha coefficient measures the internal consistency, or reliability, of a set of survey items. Use this statistic to help determine whether a collection of items consistently measures the same characteristic. assessment instruments, and test scores. Data can be continuous but will often be Likert and binary values. The.