Oil dives 4%, trade choppy on worries about China, global economy
Oil prices tumbled 4% in volatile trade on Tuesday, pressured by weak demand data from China, a gloomy economic outlook and a stronger U.S. dollar.
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### Instruction: Oil dives 4%, trade choppy on worries about China, global economy

### Response: Oil prices tumbled 4% in volatile trade on Tuesday, pressured by weak demand data from China, a gloomy economic outlook and a stronger U.S. dollar.