__________ method, the investigator asks questions over the telephone.
Personal interview
Telephone interview
Sampling
Mailing questionnaire
____________ is a smaller group selected from the population from which the relevant information would be sought.
Survey
Sample
Pilot survey
None of these
___________ saves time and cost.
Primary data
Secondary data
Sample survey
_____________ is a tool,which helps in understanding problems by providing information.
Data
Information
______________ is a method of gathering information from individuals.
In a ______________, every individual is given an equal chance of being selected for providing information.
Random sampling
Non - random sampling
Sampling errors
Non - sampling errors
___________ refers to the differences between the sample estimate and the actual value of a characteristic of the population.
Raw data is also known as ____________.
____________ questions are easy to use and to codify for analysis.
Open ended
Closed ended
Interview
There are _________ basic ways of collecting data.
Two
Three
Four
Five
