Question

A Sydney based company is interested in expanding into the western suburbs where many new subdivisions have been built. No competing companies currently exist in the area and combined with the growing population, the company believes there is a strong opportunity for their company. The company wants to survey the approximate 15,000 households in two postal code areas. Obviously, this company cannot survey all of them and they need to use a sample. The marketing manager suggests they use a random number system to select a single subdivision located somewhere in the two postal code areas and then place questionnaires in the mailboxes of every home in that selected subdivision.

Given this information, answer the following questions:

(a) Identify the type of sample method.

(b) Identify the sample frame.

(c) Indicate what, if any, sample frame error there is?

(d) Assess the representativeness and other issues associated with this sample problem.

Answer 1