collecting and organising data 11th economics ( part1)

This video is of 11th standard economics chapter collecting & organizing of data in this video I explained about meaning of collecting and organizing of data its sources methods and merits and demerits of particular method

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links

   • meaning of economic growth in hindi w...   economic growth meaning and features
sources of business finance    • meaning of  sources of finance in Hindi  

points

sources
primary source
secondary source

methods of primary source
1 direct personal interview
2 indirect oral interview
3 questionnaire method
4 sending questionnaire by post
5 sending questionnaire by enumerator

merits
1 reliable
2 less expensive
3 less time consuming
4 clear all doubts
5 extra information
6 elastic

demerits
1 not suitable for large field
2 biases may involve
3 interview may not successful if question not ask tackfully