Sampling Methods

It is desired to interview residents of a city suburb about the types of shop to be opened in a new shopping mall.  In particular, it is necessary to interview a representative range of ages.

(i) Explain how a quota sample might be carried out in this context.

(ii) Explain a disadvantage of quota sampling in the context of your answer to part (i).

(iii) State the name of a method of sampling that would not have this disadvantage, and explain whether it would be realistic to use this method in this context.

Source:

2011 Singapore General Certificate of Education Advanced Level (Higher 2), Mathematics (9740/02), Question 6.


Solution:

Author: ascklee

Dr. Lee teaches at the Wee Kim Wee School of Communication and Information at the Nanyang Technological University in Singapore. He founded The Mathematics Digital Library in 2013.

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