Final answer:
Nonrandom sampling, such as convenience sampling and self-selected sampling, can be used in internet research. These methods may produce biased data but are convenient and cost-effective.
Step-by-step explanation:
Nonrandom sampling can apply to internet research in several ways. One common type of nonrandom sampling is convenience sampling, which involves using readily available results. For example, conducting a survey by interviewing potential customers who happen to be browsing through a computer software store. Another type of nonrandom sampling is self-selected sampling, where individuals choose to respond, such as in internet surveys. These nonrandom sampling methods may produce biased data, but they can be convenient and cost-effective.