Which method of collection of data will be suitable if the area of an enquiry is wide. *
Sample method
Census method
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(i) There are many sources of data. (ii) Telephone survey is the most suitable method of collecting data, when the population is literate and spread over a large area. (iii) Data collected by investigator is called the secondary data. (iv) There is a certain bias involved in the non-random selection of samples.
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censuns method...
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