Part - 02

Data:-

Facts or information collected for scientific purpose of enquiry is called data.

Types of collecting statistical data-

1. Secondary data
2. Primary data

Secondary data and the methods of collecting it

• Secondary data is a one which was collected by some other person for some usage in some other occasion and used for their purpose.
• Usage of these secondary data consumes less time, money, labour but this may not be useful to our purpose and we have to modify it for our needs.

The two sources of collecting secondary data:-

1. Published sources:- The data which was published in any newspaper, magazine, journey project report, annual report etc., Data from agencies like UNO, WHO, IMF, UNESCO. Government report, Bank annual reports, research publications, etc., are above type.

Unpublished Sources:- Data which was not published and preserved by private, personal can be used for our purpose at their with.

Primary data and the methods of collecting it.

Primary data and the methods of collecting it.

Primary data is one Which is collected by the enumerator from respondent for the first time. It consumes more time, money and labour. It is more reliable.

Methods of collecting primary data:-

1. Direct personal observation or interview.
2. Indirect oral investigation.
3. Mailed questionnaire.
4. Information through agencies or correspondence.
5. Investigation through trained enumerator.

Direct personal observation or interview.

• It is one of the method of collecting primary data. In this method the enumerator collects the information from the respondent directly for the first time. It is more reliable.
• This method consumes more money, labour and time, if the number of respondent is very high.
• The data obtained are suitable to our requirement because it is collected by the enumerator himself.

Indirect oral investigation or interview.

• It is another method of collecting primary data. When the respondent is not Interested to give data directly. This method is used. The enumerator ask third party‚s help to get information from respondent.
• Sometimes this method is not reliable because of biased information.
• It takes less money labour and time.

Information through correspondences or agencies

Information through correspondences or agencies.

• In this method data collected from respondent through some agencies.
• These correspondence collect data and send to the enumerator.
• Mostly this method is used in newspaper, magazine, media etc., Ex: PTI, UNI, AP, Reuter etc., are agencies.

Mailed questionnaire method.

• It is another method of collecting primary data. The Enumerator form a list of question and request the respondent to give answer to these questions.
• The list of questions are not more than 30 or 40 depending on the project. Most of the questions are in the form of yes or no, pick or tick correct answer etc.,
• There should not be any personal remark or insulting questions. No overlapping questions. Questions must be in logical sequence.
• This method is only useful if the respondent is literate.

Schedule method/ Trained enumerator method.

• This is another method of collecting primary data through trained enumerator.
• In this method training to the enumerator to collect the information from respondent is essential.
• It needs more money, labour and time to collect data.