SOC221H5 Lecture Notes - Lecture 6: Sampling Frame, Grounded Theory, Systematic Sampling
Document Summary
Non-random sampling or nonprobability sampling: sample is selected using something other than a mathematically random process (used mostly in qualitative research) Haphazard (or convenience) -elements are readily available to the researcher. Dis: poor method of sampling because it relies on convenience. Quota - researcher formulates categories in which cases fit into from the population. Dis: convenience, decide in advance the specific characteristics you will base the quota on. Purposive (common) - being guided by some larger purpose. The researcher arrives at a sample based on who needs to be in it. He or she has a specific purpose or set of cases in mind associated with the grounded theory approach in which the sample size is determined when the data reach theoretical saturation. Theoretical saturation refers to the point at which no new themes emerge from the data and sampling is considered complete.
