Dec 8 (Reuters) - Slovak industrial output rose by a real 11.1 percent year-on-year in October, up from revised 9.8 percent growth in September, the Slovak Statistics Office said on Friday. INDUSTRIAL OUTPUT OCT 06 SEPT 06 OCT 05 pct change yr/yr 11.1 9.8 4.9 NOTE. Analysts surveyed by Reuters had expected industrial output to have risen by 11.5 percent on an annual basis in October <SK/ECON04> <SK/ECON09>. The data are adjusted for the impact of number of working days. (Reporting by Martin Santa in Bratislava) ((For past economic data and analysts' forecasts, double click on <SK/ECON01>)) ((Editing by Alan Crosby; martin.santa@reuters.com; Reuters Messaging: martin.santa.reuters.com@reuters.net; +421 2 5341 8402)) Keywords: SLOVAKIA ECONOMY/OUTPUT