BERLIN, Nov 14 (Reuters) - German investor morale improved more than expected in November, entering positive territory for the first time since April, the ZEW economic research institute said on Tuesday.

The institute's economic sentiment index rose to 9.8 points from -1.1 points in October, beating forecasts by analysts polled by Reuters of a November reading of 5.0 points.

However, the assessment measuring the economic situation in Germany was barely changed, rising by 0.1 points to -79.8.

"These observations support the impression that the economic development in Germany has bottomed out," said ZEW president Achim Wambach.

(Reporting by Miranda Murray, editing by Linda Pasquini)