If I want to know the economic condition of people in my locality then the method that I would choose will depend upon the size of the area. If the area to be investigated is large then I would choose the sampling method of collecting data. As with large area, sample method will be more economical to use and also it will consume less time and cost.
In case the area to be investigated is small, census method will be more suitable as the results based on the census method are accurate and highly reliable.It also provides extensive information regarding the diverse characteristics of the elements of the data.