Oil Edges Lower as Investors Eye China, US Data Singapore, 30 Dec (ONA) --- Oil prices edged lower today in thin trade ahead of the year-end as traders awaited more economic data from China and the United States later this week to assess growth in the world's two largest oil consumers. Brent crude futures fell 8 cents to $74.09 a barrel, while the more active March contract was at $73.73 a barrel, down 6 cents. US West Texas Intermediate crude dropped ...