Evidence of stronger economic growth will persuade the Federal Reserve to hold interest rates stable until the next Federal Open-Market Committee meeting in January, says economist David A. Wyss of Data Resources Inc.
''The federal funds rate has fallen nearly 4 percentage points since late summer, and it is now time for the Fed to assess the impact of the recent drop before moving further,'' Dr. Wyss said in his weekly economic forecast.
''I do not believe the decline in interest rates is over, however.'' Although the economy is stronger than many had thought, he said, it is not yet strong enough to carry itself through 1985. ''We expect at least one more poor quarter, and at the January meeting the Fed will take interest rates down yet another notch.''