Raw data is also known as ____________.
Primary data
Secondary data
Survey
None of these
______________ method is cheaper.
Personal interview
Mailing questionnaire
Telephone interview
Sampling
__________ method, the investigator asks questions over the telephone.
____________ errors can arise in data acquisition,by non-response or by bias in selection.
Sampling errors
Non-sampling errors
Random sampling
Non-random sampling
___________ method is expensive.
There are _________ basic ways of collecting data.
Two
Three
Four
Five
In a ______________, every individual is given an equal chance of being selected for providing information.
Non - random sampling
Non - sampling errors
_____________ is a preliminary piece of research conducted before a complete survey to test the effectiveness of the research methodology.
Sample survey
Pilot survey
Census
______________ method is less expensive.
All of these
_____________ is a tool,which helps in understanding problems by providing information.
Data
Information
