Dataset: airq4.dat Source: U.S. Department of Transportation Description: Average airfare and weekly passenger traffic for 4177 city pairs for the 4th quarter of 2000 and 2001 Variables / Columns City1 1-3 City2 7-9 Population of City1 (1000s) 13-20 Population of City2 (1000s) 23-30 Distance between cities (Miles) 33-36 Average Fare 2000q4 (Dollars) 39-44 Average weekly passengers 2000q4 47-54 Average Fare 2001q4 (Dollars) 57-62 Average weekly passengers 2001q4 65-72