In random sampling chance of being picked up is
Correct Answer: Same and known
Description: Ans. is 'a' Same & known a Most samples used in biomedical research are probability samples, samples in which the researcher can specify the probability of each population element being included"There are four basic kinds of probability samples:Simple random samplesStratified random samplesCluster samplesSystematic samplesSimple random sample is the simplest probability samples, it is a sample drawn so that every element in the population has an equal probability of being includedThus reading these above quoted lines, make it clear that the probability of being included (ie chance of being picked up) is same and the researcher can specify it (ie the probability in known).
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