SOCIOL 2Z03 Lecture Notes - Clinical Trial, Randomness
18 Jun 2013
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Sample is representative of the population if the characteristics of the sample closely approximate the characteristics of the pop. i. e. if this is our population, the sample will be a miniature version of the larger population. Needs to be a miniature version" of larger pop. it is impossible to have the sample be representative of the larger pop in every aspect. Random selection of samples in order to get rep samples, we need random selection - no specific way to get selected. We will need to get a list of all the students currently enrolled at mcmaster. Key concepts in probability sampling: 1. Elements elements are the units that comprise the population. Sometimes the units are groups or organizations: 2. Population theoretically specified aggregation (combination) of the elements in a study. In our study of mac students, our aggregations could be undergrad, or grad, either full time or part time: 3.
