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Convenience Sampling - A convenience sample is a group of individuals who are readily available to participate in a study. That is, the choice of the sample is left completely to the convenience of the investigator. The cost involve in picking up the sample is minimum and the cost of data collection is also generally low. For example, the investigator wants to study the demand for the types of soft drinks. The interviewer can go to some soft drinks shop and can interview shopkeepers who happens to come to that particular shop and ask them questions regarding their choice for soft drinks. Convenience sample suffers from excessive bias from known and unknown source and also there is no way that the possible errors can be quantified. It is good for taking a quick opinion poll developing tools such as questionnaire or interview schedule and for preliminary study before developing an elaborate research proposal.
STACK MAINTENANCE: We have explained That maintenance work implies the organisation of stack rooms, arrangements of books on shelve in stack rooms and conservation. In thi
ORGANISATION OF INFORMATION SERVICES: Documentation and information services are activities that grew out of information needs of user communities engaged in research, industr
Title main Entry In cases, where the Main Entry is to be provided under the title of the work as per the Rules of AACR-2R, the skeleton entry looks slightly different. The Ti
Selection of Sources: A good approach to literature search is looking up a bibliography, an encyclopaedia or a review publication. This provides background information as also
define,fuctions, principals, and introduction,how to speculation
Documentary Sources: Those information which are contained in the published and unpublished documents, reports, statistics, manuscripts, letters, diaries and so on, are gr
DOCUMENT SELECTION: You have seen that acquisition work includes three distinct phases of activities. Document selection is the first phase. There are two aspects in document
Budget Allocation Register: This is the basic financial guide for acquisition work and this must be consulted at the different stages of document selection, ordering and passi
Acquisition Through Gifts/Donations: Gifts and donations constitute an important source acquisition of reading materials in a library. Many a library has benefited enormously
Quality Control If one goes to buy a product like a refrigerator or a color television or a washing machine, the first thing he would generally do is to have a good look at the
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