Final answer:
A non probability sampling is a sample in which the probability of a population member being selected for the sample is not known.
Step-by-step explanation:
A non probability sampling is a sample in which the probability of a population member being selected for the sample is not known. This means that each member of the population does not have an equal chance of being included in the sample. Examples of non probability sampling methods include convenience sampling, quota sampling, and purposive sampling.