It is necessary to have a large random sample in order to conduct a usability test that uncovers most website problems.

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A large sample size is not necessarily required for a usability test to uncover most website problems. It is more important to recruit participants who are representative of the target user group, and to conduct the test using a variety of tasks and scenarios to uncover different types of issues. A smaller sample size of around 5-8 participants can often reveal a majority of usability problems. However, larger sample sizes may be necessary for statistical significance or to capture very rare issues.

It Is Necessary to Have a Large Random Sample in Order