ISBN: - 978-93-88936-09-5 respondents. Further, an in-depth analysis was done with the support of the questionnaire prepared for final study. 1.20STATISTICAL TOOLS To make the present research study highly effective, meaningful and fruitful, the following statistical techniques were used for collection, analysis and interpretation of data. A detailed and well prepared questionnaire used for this study and an interview method is adopted to collect necessary data to carry out this project. For data analysis tables and diagrams are being used extensively which facilitate the calculations of averages, percentages, standard deviation, correlation and coefficient of variations where they are necessary. In order to study the relationship between domestic price of NR and the variables such as production, consumption, international price, import and exported., . The following tools for this study like tables, charts, Spearman co-efficient of correlation , Chi-Square Test, Pair sample test, Ftest and T- test analysis, Liker’s five points scaling methods are used for various problems faced by rubber cultivators and marketing. 1.20(A) Compound Growth Rate (CGR) Compound growth rate is calculated for analysing the growth of production of rubber, import, export and consumption of natural rubber. The growth rate is calculated as below. Yt = Yo (Hg)t ABt where Ya=A and (Hg) = B Yt = ABt Taking log, both sides Log Yt = log A + t log B Ie Y* = A* + t B* When log Yt = Y* log A = A and log B = B* This is simple regression line in Y* and t B* can be estimated using least squares method. Then the estimate of compound growth rate can be obtained as ^ ^ g (Anti log B)-1). For expressing the compound growth rate in percentage terms, ^ has to be multiplied by 100. That is g 100 ^ (Anti log ^) -1) ×100 B g 28
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