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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.
STEPS LITERATURE SEARCH There are many points to consider in making an effective literature search. The first and foremost step is to ascertain the purpose, scope, depth and
Catalogue Code: As with classification schemes, there are different catalogue codes available for use in libraries. Two of them are already known to you as they are prescribed
QUESTION 1 Caring for differences in Early Childhood Centres has become very important. Briefly explain why QUESTION 2 Briefly describe why planning is important even i
Local Book Suppliers: Every library has to depend on local booksellers for most of the supplies. Unlike the major outside book markets referred to earlier, local book shops d
SCREENING INFORMATION OR STEPS : Some of the references identified may not be relevant, readers can usually judge the relevance of the reference quickly based on abstra
Beta of a share Financial analysts often talk of the beta (b) of a share. We will describe what the beta signifies and the method commonly used to estimate it in this section.
Acquisition of NBM: Once it is decided that NBM will form a part of the collection of the library, efforts should be made by the librarian to make a planned selection of NBM t
Releasing Work: Documents whose physical and technical processing have been completed are released for use at prescribed intervals, like once a week, once a fortnight, or on
Types: There are various types of survey research-descriptive, evaluative, comparation, correlation, longitudinal, cross-sectional, cross-cllltural, etc. Descriptive Survey:
QUESTION 1 (a) Explain the concept of synergy (b) Using examples, discuss the main areas/sources of potential synergy when two companies merge (c) What are the problems i
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