Distinguish between (1) primary data and secondary data (2) census method and sample method
Answers
Answer:
Primary data - the data which is in its original form in which no changes had been done is called primary data.
Secondary data - the data which is taken form the other sources which already have the particular data.
Census method - it is that method in which data is collected from all over the universe.
Sample method - it is that method in which data is collected randomly.
Primary data-Data collected firsthand Secondary data-Data collected from any other source or secondary source.
Census Method-Data collected from everyone in the population.
Sample method-Data collected from a specific group within the population.
Explanation:
Primary data basically means any information or data collected directly by the researcher in the field for research purposes.Therefore,it refers to firsthand or direct information/data collected by the researcher himself or herself.Examples of primary data collection methods in Statistics include direct survey method,questionnaire,personal or face to face interviews,direct observation,video recordings and so forth.
Secondary data on the other hand,deals with information or data collected from any secondary or secondhand sources such as newspaper,television,internet,social archives,videos, radio, magazines,journals,books and so on.Note that all these data or information sources are not firsthand,in a sense,that someone else has already collected some data or information on any particular topic and documented those in these materials,which can be used as secondary sources for other researchers.
Census method refers to a particular data collection method from the target population of study based on any research topic.Census method involves data or information collection from each and every individual within the target population chosen for research study.Hence,census method is broad,comprehensive and often used for official government purposes.Example of census method can be Population Census in any country.
As opposed to Census method,Sampling Method is another type of data collection method in which groups,sections or subsections are being selected randomly and systematically from the target population of study based on the research topic.Sampling is mainly done due to practical difficulty of covering each and everyone from the target population of study which requires a great deal of resources,money,manpower and prolonged field visits, considering that the target population of study is quiet huge.Examples of sampling method can be found in any research study pertaining to social science such as Economics,Sociology or Political Science.