* Nov factory output +6.2 pct y/y, vs f'cast +5.6 pct

* Jan-Nov fixed-asset investment +10.2 pct y/y, vs f'cast 10.1 pct

* Nov retail sales growth stronger-than-expected

* Property investment growth slows to 1.3 pct in Jan-Nov

* More policy steps seen needed despite signs of steadying

By Xiaoyi Shao and Kevin Yao

BEIJING, Dec 12 (Reuters) - China's activity data was stronger than expected in November, with factory output growth picking up to a five-month high, signalling that a flurry of stimulus measures from Beijing may have put a floor under a fragile economy.

Still, analysts believe more policy steps are needed to weather nagging headwinds from a cooling property market, risks from high domestic debt levels, and weak global demand as financial markets brace for interest rate rises by the U.S. Federal Reserve.

"Real interest rates are still high due to falling producer prices," Wang Jun, senior economist at the China Centre for International Economic Exchanges (CCIEE), a Beijing-based think-tank.

"It's still necessary to cut interest rates to support economic growth and combat deflation."

Factory output grew an annual 6.2 percent in November, data from the National Bureau of Statistics(NBS) showed, quickening from October's 5.6 percent and beating expectations of 5.6 percent.

Growth in China's fixed-asset investment, one of the main drivers of the economy, rose 10.2 percent in the first 11 months, unchanged from the gain in January-October, and higher than an expected 10.1 percent rise.

Retail sales grew an annual 11.2 percent in November - the strongest expansion this year - compared with 11.0 percent in October. Analysts had forecast 11.1 percent growth in November.

"While low base could be the factor driving the headline growth, we still have to acknowledge that China's data are illustrating signs of stabilization, albeit at a low level," said Zhao Hao, senior economist at Commerzbank in Singapore.

The data came after weak trade and inflation readings earlier this week, which underscored the persistent slack in the economy.

WEAK DEMAND, OVERCAPACITY

The world's second-biggest economy has been hit by weak demand at home and abroad, factory overcapacity and challenges posed by its transition to a consumption-led growth model from one reliant on investments.

With the Fed poised to raise interest rates for the first time in almost a decade at next week's review, the risk of intensifying capital outflows has added to Beijing's policy challenge.

Premier Li Keqiang has recently pledged to step up "supply-side" reform to generate new growth engines in the economy while tackling factory overcapacity and so-called zombie firms.