Essay: Importance of data and data collection

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Data
Data is an any concept of a matter or incident. “Datum” is a Greek word. It’s plural from is “Data”. This means to give or something given. Data comes from observations made upon reality. A data is a collection of statical information of values of the variable of interest in a study.
Source of Data
Data can be defined as the quantitative or qualitative values of a variable. Data is thought to be the lowest unit of information from which other measurements and analysis can be done. Data can be numbers, images, words, figures, facts or ideas. Data in itself cannot be understood and to get information from the data one must interpret it into meaningful information. There are various methods of interpreting data. Data sources are broadly classified into primary and secondary data.
Types of Data
Importance of data and data collection
Data is one of the most important and vital aspect of any research studies. Researchers conducted in different fields of study can be different in methodology but every research is based on data which is analyzed and interpreted to get information. Data is the basic unit in statistical studies. Statistical information like census, population variables, health statistics, and road accidents records all developed from data.
Techniques of Data collection
There are two sources of data collection techniques. Primary and secondary data collection techniques, primary data collection uses surveys, experiments or direct observations. Secondary data collection may be conducted by collecting information from a diverse source of documents or electronically stored information census and market studies are examples of a common sources of secondary data. This is also referred to as “data mining”.
Primary Data
Primary data means original data that has been collected specially for the purpose in mind. It means someone collected the data from the original source first hand. Data collected this way is called primary data.
Primary data has not been published yet and is more reliable, authentic and objective. Primary data has not been changed or altered by human beings; therefore its validity is greater than secondary data.
Sources of primary data
There are many types of data. That’s describing below:
Survey: survey is most commonly used method in social sciences, management, marketing and psychology to some extent. Observation, questionnaire, interview, sampling are some of survey type.
Those are quantitative data source. Questionnaire survey also many types there are structure, unstructured, open-ended and close-ended. Questionnaire is the most commonly used method in survey. Questionnaire is a list of questions for which the respondent gives answers. Questionnaire is a list of questions send to a number of persons for them to answer and it secures standardized result which can be tabulated statistical. Questionnaire is a send of some organized number wise question for getting the information from the population about any spatial problems.
Observations can be done while letting the observing person know that he is being observed or without letting him know. Observations can also be made in natural settings as well …

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