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Collection of Data — Economics STD 11 Commerce — Question

CBSE BoardEnglish MediumSTD 11 CommerceEconomicsCollection of Data3 Marks
Question
Distinguish between random sampling and non-random sampling.
Or
What do you know about random sampling and non random sampling?
 
✓

Answer

Random sampling is a technique of drawing a sample from the population in which each and every unit of the population has an equal chance of being selected in the sample.
Whereas in a non-random sampling method, all the units of the population do not have an equal chance of being selected and convenience or judgement of the investigator plays an important role in the selection of the sample. They are mainly selected on the basis of judgement, purpose, convenience or quota.

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