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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.
LIBRARY EQUIPMENT IN PHYSICAL PLANNING OF LIBRARY IN LIBRARY MANAGEMENT Most of the equipment used in the library is standard office equipment, sometimes adapted library use.
explain the food & beverages control cycle in details
Non Conventional Indexing and Filing Equipment -libraray equipment-libraray management Use of mechanical devices for sorting information recorded on special kinds of cards lik
QUESTION 1 (a) What do you understand by the term 'Enterprise Resource Planning (ERP)? Discuss the evolution of ERP (b) How business process re-engineering can be integrated
Probability Sampling: Probability sampling involves the use of random selection process to select a sample from members or elements of a population. The goal of probabi
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Advantages The machine-readable catalogue performs, all the functions of a library catalogue with greater efficiency and speed than any other form. We shall spell out theseadva
Question 1: National and International economic trends tend to have an influence on the demand for the hospitality industry. Discuss six (6) main measures that the hotel sector
Resource Sharing Library Network Resource sharing is the focal point of library networking and cooperation. The tested technological advances in this field have tremendously i
Computer-based Materials: Computer-based materials are a recent development but have become very important to modern libraries of all types, specifically computerised bibliog
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