Biology Forums - Study Force

Purposive sampling is ______________.   
a.  a nonrandom sample in which the researcher begins with one case, and then, based on information about interrelationships from that case, identifies other cases, and repeats the process again and again
b.   a sample in which the sampling elements are selected using something other than a mathematically random process
c.   a nonrandom sample in which the researcher first identifies general categories into which cases or people will be selected, and then he or she selects cases to reach a predetermined number of cases in each category
d.   a nonrandom sample in which the researcher selects anyone he or she happens to come across
e.   a nonrandom sample in which the researcher uses a wide range of methods to locate all possible cases of a highly specific and difficult-to-reach population

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