____________ method does not allow influencing of the respondents by the interviewer.
Personal interview
Telephone interview
Mailing questionnaire
None of these
______________ method is cheaper.
Sampling
Raw data is also known as ____________.
Primary data
Secondary data
Survey
_____________ is a tool,which helps in understanding problems by providing information.
Data
Information
______________ is a method of gathering information from individuals.
______________ are mainly selected on the basis of judgement,purpose,convenience or quota.
Random sampling
Non-random sampling
Sampling errors
Non-sampling errors
The data in a survey are collected by _____________.
The difference between the actual value of a parameter of the population and its estimate is the ____________.
Non - sampling errors
Non - random sampling
A survey which includes every element of the population is known as ______________.
Census
Sample survey
Pilot survey
There are ___________ main types of sampling.
Two
Three
Four
Five
