robability and Non-Probability: Fill in the blanks. No need explanation 1. _____ also called "chain-referral sampling" The samples have the traits that are rare to find. 2.In _____ sampling, the researcher is the one who choose who to participate based on the need of the study.  3. ______ sampling is used when the population or geographical area of the research is so large. 4. In _____ sampling, there is no assurance that each item/person has a chance of being selected as a sample.

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A:

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