Data collected from any published or unpublished sources are called ____________.
Frequency distribution
Primary sources
Secondary sources
None of these
_________ include government publications, documents and reports.
Primary source
Secondary source
Personal observation
__________ is expressed by ' f '.
Raw data
Simple frequencies
Cumulative frequencies
___________ are collected, tabulated and presented in a tabulated form either in absolute terms, percentages or indices.
Data
Interview
Information
___________ method is useful in carrying out the survey of a larger area.
Questionnaire
____________ helps in comparing the two or more than two frequency distributions.
Frequency polygon
Inclusive method
Exclusive method
To draw meaningful inferences and to make them usable the _________ requires tabulation and classification.
Frequency
The curve obtained by plotting cumulative frequencies is called an ____________.
Ogive
The person involved in conducting the _________ should be clear about the objective of the survey.
Schedule
__________ is expressed by ' cf '.
Simple frequency
Cumulative frequency