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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.
MARC and the Subject Approach The concept of MARC (Machine Readable Catalogue) has brought in a new era in the field of library and information services. MARC stimulated the
Constraints: This unit calls for a comprehensive and thorough treatment to cover the various aspects of history and development of library catalogue codes. However, such a tho
U nrecognised to institutionalised The Communities of Practice have many varieties of relationships to with the organisations which range from completely the unrecognised to
CLASSIFICATION TERMINOLOGY: Library classification as an academic discipline is about 125 years old. Its teaching and research has gained momentum comparatively recently. It m
QUESTION 1 (i) Discuss the key activities of the strategic management process'. Explain why it is important for managers to recognise the interdependent nature of these activit
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QUESTION (a) The ISO 9000 series of quality management system standard is fast becoming a de facto requirement for doing business in many industries, despite the fact that it i
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Differentiate between Historigrams and Histogram
Selection of potential suppliers This is an important function of the purchase department. If the material under reference is a standard item covered by company standards, the
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