where Rij is rev al d compar tive ad nt ge of c untryi fo c mdity j , Xi is export
by countryi of c m dity j , X w is to al w r d exports f com dity j , Xi
is to al
world exports f countryi , and X w
is to al w r d exports. The valu of Rij may be qual, great o l s than 1. If it s great h n o e it m ans the country i has comp rative
adv nt ge i xports f com dity j becaus it marke sh i large in th com dity
than isretoal xprtsand vicersa.