Analysis and interpretation of intercropping experiments are complex due to inclusion of two or more crops. Moreover, various types of experiments are involved in intercropping systems. Therefore, it is not to be expected that a single statistical approach suits all kinds of problems. The basic objective in all intercrop experiemtns is to assess biological or agronomic advantage in any intercrop system. This paper suggests possible ways of analyses for combined benefit of rubber based intercropping systems during the immature stages of rubber by employing the proxy variables girth and girth increment to substitute for rubber yield. Moreover, several other indices viz. Income Equivalent Ration (IER) and Monetary Advantage (MA) have been modified to suit intercropping systems under rubber. For the Rubber-Tea intercropping system, Bivariate analysis and diagrams were made using rubber girth and tea yield. The proposed analyses can be employed to assess the beneficial/deleterious effect of intercropping in rubber based farming systems.