_____________ 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
There are _________ basic ways of collecting data.
Two
Three
Four
Five
____________ refers to a group or section of the population from which information is to be obtained.
Sample
Random
Sampling error
____________ questions are used to get more than just a one word answers.
Data
Closed ended
interview
Open ended
In __________ method the investigator asks questions over the telephone.
Personal interview
Telephone interview
Sampling
Mailing questionnaire
The difference between the actual value of a parameter of the population and its estimate is the
Non - random sampling
Non - sampling error
____________________ method cannot be used by illiterates.
____________ method is used when the researcher has access to all the members.
____________ helps in pre-testing of the questionnaire.
None of these
