CORRECTED-Nikkei tumbles over 3 pct to 7-1/2-week low as oil plunges
(Corrects headline to say Nikkei tumbles to 7-1/2-week low, not 6-week low)
* All sectors in negative territory
* Market focuses on if assets will rebound after Fed's expected hike - analysts
* Market looks past central bank's 'tankan' survey
By Ayai Tomisawa
TOKYO, Dec 14 (Reuters) - Japan's Nikkei share average tumbled more than 3 percent to a 7-1/2-week low on Monday as global oil prices extended their plunge, adding to nervousness ahead of an expected U.S. interest rate hike this week.
The Nikkei dropped 3.2 percent to 18,611.09 points by midmorning, the lowest since Oct. 22, as investors sold riskier assets.
Last week, the benchmark fell 1.4 percent, as investors worried whether a weakness in oil and commodities signalled a broader global economic slowdown, though much of the glut has been attributed to excess supply.
Investors' focus now on is whether the market can withstand a U.S. rate hike, which is excepted to be announced after the U.S. Federal Reserve's Dec. 15-16 policy review. Continuación...