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CORRELATION
Correlation is the study of the liner relationship between two variable when there is a relationship of quantitative measures between two set of variable the appropriate statistical tool for measuring the relationship and expressing each in a precise way is known as correlation. For example there is a relationship between the heights and weights of persons demand and prices of commodities etc.
According to W.I. King Correlation means that between two series or groups of data there exists some relationship connections.
According to croxton and Cowden" The appropriate statistical tool for discovering and measuring the relationship of quantitative nature and expressing it in brief formula is known as correlation.
The coefficient of correlation measures the degree of relationship between two set of figures. As the reliability of estimates depend upon the closeness of the relationship it is imperative that utmost care be taken while interpreting the value of coefficient of correlation otherwise fallacious conclusion can be draw.
Machine Tabulation This methods of tabulating information is generally used in case of extensive large scale surveys. Mechanical sorting and tabulating equipments and su
the following table gives place under different states of nature Strategies States of nature s1 s2 s3 A 10000 3000 2000 B
ANSWER OF ACTIVITY WITH THEIR PRECEDING ACTIVITY AND DURATION OF TIME IN WEEKS?
INFORMATION RESOURCES - SELECTION PRINCIPLES: Selection of materials for a library requires sagacity, adroitness and attention to people's needs for everything from books and
Reports: Report literature is an important primary source of information, particularly for a research library. This new medium for communication of information came into bei
Sources of Hypothesis Hypothesis may be developed from various sources. Some of the important sources are the followings: 1. A Hypothesis Arises from Intuition
A paper mill prouduces two grads of paper viz., X and Y. Becouse of raw material restriction, it cannot product more then 400 tons of grade X paper and 300 tons of grade Y paper in
is model the essence of oprational research.
disadvantages of model in operational research
discuss the significance of oparation research
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