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TYPES OF SAMPLING:
Sampling plans can be grouped under two categories-probability sampling and non-probability sampling. Probability sampling uses a technique by which the researcher ensures the probability, that each element of p~pulation will be included in the sample. That is each element has an equal or known chance of being included. It utilizes some form of random selection because of which greater confidence can be placed in the representativeness of probability samples. Non-probability samples use non-random methods i.e. there is bias in the selection. There is no assurance that every element has a chance of being included or, in other words the researcher cannot estimate the probability that each element will be included in the sample. Refer to Figure 4.1 and note the purpose of probability and non-probability sampling. The population values such as mean of standard deviation is called a Parameter whereas the measured value of the sample is termed statistic. We infer the parameter from the statistic when we know that the sample is a true representative of population. Refer Block 4 for further details of parameter and statistic.
Acquisition Sources: As mentioned earlier, supply is another basic factor. Supply means availability of periodicals / serials for acquisition. Information regarding supply can
QUESTION Previously, there was much emphasis on preparation of the end state ‘master plan', which was assumed to be sufficient for guiding and controlling future development pa
Question: (a) Which are the bodies responsible for policies and decisions on the exploitation and use of water resources. Explain their respective roles and functions? (b)
Presentation of Results: Proper presentation of search results requires as much skill and care as in defining the subject and parameters of search. Reading lists need only be
The world economy has become more global as nation states have become more tightly integrated. The potential business opportunities have increased commensurately.
QUESTION 1 The value chain is an important tool in strategic management. For instance, it can be used by a firm to improve its cost competitiveness. Discuss the options availab
Acquisition Through Gifts/Donations: Gifts and donations constitute an important source acquisition of reading materials in a library. Many a library has benefited enormously
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Ordinal Data: Ordinal data are discrete or discontinuous consisting of categories of variable that are ranked, ordered or compared according to a predetermined standard cl
History of Mergers and Acquisition In the previous section, we had an overview of merger and acquisition. In this section we will cover its history. The understanding of the hi
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