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SIZE OF SAMPLE:
Large samples are more representative of the population of interest than the sinall samples. There are no specific rdes for determining the desired sample size. If the researcher uses the probability sampling method smaller samples are needed than non probability sampling.
A sample size of minimum 30 will be adequate according Poscoe (1975), but it can bc as large 100, 500, 1000, etc. Most nursing studies are limited to small convenient samples. Generalization to total population is usually difficult to make with any degree of confidence. The use of small samples dictates the need for studies to be replicated. If several investigators find similar results, generalization to other population are more appropriate.
THE REFERENCE SOURCES/ BOOKS: A basic question arises then when we start discussing reference books, that is what books and other materials a reference library should stock an
L C Descriptive Rules: Library of Congress. Rules for Descriptive cataloging at the Library of Congress Adopted by the American Library Association. - Washington, D.C.: Libra
Acquisition Through Gifts/Donations: Gifts and donations constitute an important source acquisition of reading materials in a library. Many a library has benefited enormously
Periodicals: Now let us discuss the type of documents that need binding in libraries. Among these, periodicals need to ' be bound for their archival value. Periodicals constit
Advantages and Limitations: Experimental approach represents the most powerful method for testing hypothesis of the cause and effect relationship between variable. Becau
CONTENT OF A WRITTEN REVIEW: Bibliographic material and important information from sources may be recorded on note book, to keep a records of reference used for study.
Information Services: In that part we shall discuss eight types of information services: Current Awareness Service (CAS) Selective Dissemination of information (SDI)
Knowledge The dictionary definition of knowledge is 'organised body of information or the comprehension and understanding, consequent on having acquired an organised body of
Question: The following diagram shows a C.P.A.-network modeling the stages in the construction project. Each arc is labeled with the letter denoting the activity it represents
FUNCTIONS OF DOCUMENTATION AND INFORMATION CENTRES: In general, a documentation or an, information centre brings to the attention of specialist users the current as well as r
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