Direct personal Interview:
Interviewer has to be face-to face with the person from whom he wants information.
This person is called respondent.
Question booklet is prepare and sent to respondents.
Investigator can collect data according to his requirement.
It is reliable and sufficient for the purpose of investigation.
It involves a lot of cost in terms of money, time and energy.
Secondary data means to adopt the data already collected by someone else.
Obtained statistical information is called secondary data.
The source of such information is called the secondary source.
Data is obtained by published and unpublished sources.
For ex. Investors collects the information about salaries of National Open School from the salary register maintained by its accounts branch.
Some of the published sources:
Central Statistical Organisation (CSO)
∙ Publishes data on national income, savings, capital formation etc
∙ It’s known as National Accounts Statistics.
National Sample survey organisation (NSSO)
∙ Provides data on all aspects of national economy such as agriculture, Industry and labour.
Reserve Bank of India (RBI)
∙ Publishes financial statistics, Report on currency and finance, RBI Bulletin, Statistical tables relating to banks in India etc.
∙ Publications are Indian Labour statistics, Indian Labour Year Book and Indian Labour Journal.
∙ Provides Statistics on population.
∙ Undertaken by office of the Register General, Census of India, Ministry of Home Affairs.
Papers and Magazines
∙ Journals like Capital, Commerce, Economic and Political Weekly, Economic Times etc. also published statistical data.