<p><span style="font-size:14px"><span style="font-family:Arial,Helvetica,sans-serif">A simple formula relating economic development to research and development has been established. The more scientific research and development a country engages in, the more its economy advances. A research and development index(RDI) has also been established. RDI can be utilized as a good indicator to determine the level of economic development of countries. That is, whether a country is very developed, medium or lowly developed.</span></span></p>