A sampling frame is a numbered list of all items in a population (not a sample).Cluster sampling involves selecting one definable subsection of the population which therefore makes the potential for bias considerable.
A、Foreign exchange rates
B、Population data
C、Details of industry costs
D、Interest rates
A、Foreign exchange rates
B、Population data
C、Details of industry costs
D、Interest rates
【参考答案及解析】
Population data. Foreign exchange rates and interest rates are likely to be obtained from financial newspapers. Details of industry costs are more likely to be found in trade journals.
Population data. Foreign exchange rates and interest rates are likely to be obtained from financial newspapers. Details of industry costs are more likely to be found in trade journals.