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Data collection presentation

Data collection - Statistical data are a numerical statement of aggregates. Data, generally, are obtained through properly organized statistical inquiries conducted by the investigators. Data can either be from primary or secondary sources.

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Data collection presentation

  2. 2.  Data can be define as the quantitative or qualitative value of a variable (e.g. number, images, words, figures,facts or ideas)  It is a lowest unit of information from which other measurements and analysis can be done.  Data is one of the most important and vital aspect of any research study. Introduction
  3. 3.  Object and scope of the enquiry.  Sources of information.  Quantitative expression.  Techniques of data collection.  Unit of collection. Factors to be Considered Before Collection of Data
  4. 4. Sources of Data External sources Primary data Secondary data Internal sources
  5. 5. Internal sources of Data o Many institutions and departments have information about their regular functions,for their own internal purposes. o When those information are used in any survey is called internal sources of data. o Eg…social welfare socities. External sources of data o When information is collected from outside agencies is called external sources of data. o Such types of data are either primary or secondary. o This type of information can be collected by census or sampling method by conducting survey. Internal & External Sources of Data
  6. 6.  Data that has been collected from first-hand experiences is known as primary data.It has more reliable,authentic and not been published anywhere.  Primary data has not been changed or altered by human being,therefore its validity is greater than secondary data. Primary Data
  7. 7. Methods of collecting primary data Direct Personal Investigation (i.e. interview method) Indirect oral investigation (i.e. through enumerators) Investigation through local reporters questionnaire Investigation through mailed questionnaire Investigation through observation
  8. 8. Merits Targeted issued are addressed Data interpretation is better High accuracy of data Address as specific research issues Greater control Demerits Evaluated cost Time consuming More number of resources are required Inaccurate feedback Required lot of skill with labour. Primary Data
  9. 9.  Secondary data are those that have already been collected by others.  These are usually in journals, periodicals, research publication ,official record etc.  Secondary data may be available in the published or unpublished form. When it is not possible to collect the data by primary method,the investigator go for secondary method.  This data collected for some purpose other than the problem at hand. Secondary Data
  10. 10. Published Sources International Government Municipal corporation Institutional/ commercial Unpublished sources Method of collection secondary data
  11. 11. Merits Quick and cheap source of data Wider geographical area Longer orientation period Leading to find primary data Demerits No fulfill our specific research needs Poor accuracy Data are not up to date Poor accessibility in some cases Secondary Data
  12. 12. Primary data  Real time data  Sure about sources of data  Help to give results/ finding  Costly and time consuming process  Avoid biasness of response data  More flexible Secondary data  Past data  Not sure about of sources of data  Refining the problem  Cheap and no time consuming process  Can not know in data biasness or not  Less flexible Difference b/w primary and secondary data
  13. 13. Kanchan Agrawal Created by -