Collection of Data | Statistics For Economics | Class 11 

Collection of Data | Statistics For Economics | Class 11
This Video covers the following topics:-
1.Statistical Enquiry and Difference between internal and external sources
2.Difference between Primary and Secondary data
3.Methods of Collecting Primary Data -
Direct Personal Investigation- Merits and Demerits
Indirect Oral Investigation - Merits and Demerits
Information from Correspondants - Merits and Demerits
Telephonic Interviews - Merits and Demerits
Mailed Questionnaire Method - Merits and Demerits
Questionnaire Filled by Enumerators - Merits and Demerits
4.Construction of Questionnaire
5.Census Method - Merits and Demerits
6.Sampling Method- Merits and Demerits
7.Factors affecting size of sample
8.Types of Sampling Method - Simple random sampling, Restricted random sampling , Stratified random sampling , Systemic sample, Cluster sampling, Multistage sampling, Non random sampling ,Judgement sampling , Quota sampling, Convenience sampling - Merits and Demerits
9.Sources of Secondary data
10.National Sample Survey Organisation (NSSO)
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