A metric is a “system or standard of measurement” represented in units that can be utilized to describe more than one attribute. Metrics come in very handy when it comes to quantify usability during the usability evaluation of software, websites and applications.
Why would you need to Measure Usability?
There are many reasons as to why someone would require to measure usability – the most common reason being the need to effectively communicate with the stakeholders of the system being evaluated. Other uses can be to satisfy the need for comparing the usability of two or more products and to quantify the severity of a usability problem.
Ultimately, the primary objective of usability metrics is to assist in producing a system or product that is neither under- nor over-engineered.
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