Collection of Data — Economics STD 11 Commerce — Question

According to this method the investigator has to collect his information himself personally from the source concerned. It means the investigator should be are the spot where the enquiry concerned. It means the investigator should be at the spot where the enquiry is being conducted, it is also expected that the investigator should be very polite and courteous. Further he should acquaint himself with the surrounding situation and must know their local customs and tradition.
Advantages:

1. The information collected by this method is reliable and accurate
2. It is a good method for intensive investigation.
3. This method is flexible. Investigator can make requisite changes in the language of the question or otherwise as per the comfort of respondent.
4. Data obtained by this method are more uniform and homogeneous.
5. This method gives a satisfactory result provided the scope of inquiry is narrow.

Disadvantages:

1. This methods is not suitable for extensive inquiry.
2. Its required a lot of expenses and time.
3. The bias on the part of investigator can damage the whole inquiry.
4. Sometimes the informant may be reluctant to answered the question Suitability This method is suitable when scope of enquiry is limited and much accuracy is required.