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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.
Determining Degrees of Freedom One of the prerequisites for using chi square test is that we should calculate the number of degrees of freedom for the contingency table. T
#questioA paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y
This method is more systematic and orderly than least cost method. Here penalties for each column and row of the transportation table are determined, and the row or column with
Pamphlets - classification of documents: A pamphlet is an independent publication. It is normally a document of a few printed pages, usually less than 49. Pamphlets cover an e
A paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y paper i
Research Abstracts Abstracts of researches completed are available from the followings publications: a. ICSSR Research Abstracts: contain abstracts of research projects
STANDARA DEVIATION Standard deviation is the square root of the arithmetic average of squares of all the deviations from the mean. In short it may be defined as th
SING TEST The sign test is the simplest of the parametric tests. Its name comes from the fact that it is based on the direction ( or sings for pluses or minuses ) of
This is determined by disposable personal income( personal income minus direct taxes and other deductions ). Some people suggest the use of discretionary income in place of
RANK SUM TEST THE MANN WHITNEY U - TEST Mann Whitney u test is an alternative to the samples test. This test is based on the ranks of the observation of two samples pu
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