____________ are based on first hand information.
Sampling
Primary data
Secondary data
None of these
____________ method does not allow influencing of the respondents by the interviewer.
Personal interview
Telephone interview
Mailing questionnaire
______________ are mainly selected on the basis of judgement,purpose,convenience or quota.
Random sampling
Non-random sampling
Sampling errors
Non-sampling errors
__________ method, the investigator asks questions over the telephone.
____________ method is used when the researcher has access to all the members.
Sample survey
___________ refers to the differences between the sample estimate and the actual value of a characteristic of the population.
Non - random sampling
Non - sampling errors
______________ is known as method of complete enumeration.
Pilot survey
Census
____________ questions are easy to use and to codify for analysis.
Open ended
Closed ended
Interview
______________ is a method of gathering information from individuals.
Survey
The data are collected and processed by some other agency are called _____________.
Randam sampling
