Raw data is also known as
Survey
Secondary data
Sample method
Primary data
_____________ is a preliminary piece of research conducted before a complete survey to test the effectiveness of the research methodology.
Sample survey
Pilot survey
Census
Random sampling
____________ method is used when the researcher has access to all the members.
Personal interview
Telephone interview
Mailing questionnaire
___________ method is expensive.
None of these
____________ should be completed before the final survey commences.
The difference between the actual value of a parameter of the population and its estimate is the
Non - random sampling
Non - sampling error
Sampling error
____________ helps in pre-testing of the questionnaire.
____________________ method cannot be used by illiterates.
Sampling
______________ method is less expensive.
All of these
