作者:UNADISTA_ Soy 5 年以前
195
更多类似内容
Sample Survey
Continuous Panel Discontinuous Panel
Intensive study of selected examples of the phenomenon of interest
An interview conducted among a small number of individuals simultaneously.
Interviews with people knowledgeable about the general subject being investigated.
A search of popular press (newspapers, magazines, etc.), trade literature, academic literature, or published statistics from research firms or governmental agencies for data or insight into the problem at hand.