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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.
Question 1 As a trader in order to be competitive and successful, how can you address some risks that are peculiar to foreign trade like commercial risks and political risks?
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
DEFINITIONS OF CLASSIFICATION TERMINOLOGY: Most of the terms with definitions were used for the first time in the first edition of Prolegomena to Library Classification (1937)
what is an information resource management?
QUESTION (a) Explain the Arbitrage Pricing Theory. In what ways the Arbitrage Pricing Theory is considered to be a superior model. What are its main limitations? (b) Disting
Materials Handling Devices Materials handing devices are of three types: a. Lifting and lowering devices ( vertical movement) b. Transporting devices( horizontal move
Methods of Assessing Information Needs: As mentioned above there are two sets of methods: One used in user studies for analysing verbal behaviour and the other in use studies
QUESTION Awards for good performance are increasingly employed within the public service in many countries. These may or may not have a financial value. Performance-related pay
Nominal Group T echnique It is a method of group decision-making in which individual members meet face to face, first, to generate ideas individually, and then to poll
The composition of solid waste from a residential community is as follows: Component Percent by weight Combustibles ---
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