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Metrics Measurement Techniques

To ensure the validity, objectivity, and repeatability of a metric, measurement must follow an established protocol. For example, a readability measurement must be taken on a specified number of randomly selected 100-word samples of paragraph text per 100 pages; otherwise, different people might take different numbers of samples, or take them from an atypical place in the document such as the introduction. Likewise, a count of the number of graphics in a document must first define “graphic” and “page;” otherwise, one person might count icons while another does not.