September 2018
Intermediate to advanced
392 pages
10h 16m
English
Note
Random assignment is not the same as random sampling
Remember, as we explained in Chapter 7, random assignment is not the same as random sampling. Random sampling refers to selecting subjects (people, organizational units and so on) in such a way that they represent the whole population, whereas random assignment deals with assigning subjects to a control group and intervention group in such a way that they are similar at the start of the intervention. Put differently, random selection ensures high representativeness, whereas random assignment ensures high internal validity.
The gold standard – a randomized ...
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