SEARCH Articles Figures Tables D - is the Euclidean distance between i and i dm and dm are the city-block distances between i and i for variables Xi and X2 respectively. The city-block distance is 4ri dm- [Publishers Imprint] [Publishers Imprint] [Publishers Imprint] [Publishers Imprint] [Publishers Imprint] [Publishers Imprint] [Publishers Imprint] [Publishers Imprint] [Publishers Imprint] [Publishers Imprint]