03-10-2012, 05:30 PM
The Processing Operations
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EDITING
Editing of data is a process of examining the collect of raw data (specially in surveys) to detect errors and omissions and to correct these when possible. As a matter of fact, editing involves a careful scrutiny of the completed questionnaires and/or schedules. Editing is done to assure that data are accurate, consistent with other fact gathered, uniformly entered, as completed as possible and have been well arranged to facilitate coding and tabulation.
CODING
Coding refers to the process of assigning numerals or other symbols to answers so that responses can be put into a limited number of categories or classes. Such classes should be appropriate to the research problem under consideration. They must also possess the characteristics of exhaustiveness (there must be a class for every data item).
CLASSIFICATION
Most research studies result in a large volume of raw data which must be reduced into homogeneous groups if we are to get meaningful relationships. This fact necessitates classification of data which happens to be the process of arranging data in groups or classes on the basis of common characteristics.
TABULATION
When a mass of data has been assembled, it becomes necessary for the researcher to arrange the same in some kind of concise and logical order. This procedure is referred to as tabulation. Tabulation is essential because of the following reasons. 1. It conserves space and reduces explanatory and descriptive statement to a minimum.