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Validity checks ensure that data entered into a system meets specified criteria. Common types include format checks, which verify that data follows a predefined format (like dates or phone numbers); range checks, which ensure numerical inputs fall within a specified range; consistency checks, which validate that related data points are logically coherent; and presence checks, which confirm that required fields are not left empty. Together, these checks help maintain data integrity and accuracy.

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4mo ago

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When a test measures the variable or dimension it is supposed to measure, it has validity. Validity refers to the accuracy and relevance of the test in assessing what it claims to measure. Various types of validity, such as content validity, construct validity, and criterion-related validity, can help establish a test's effectiveness in capturing the intended constructs.


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