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Janet Yellen just got some pretty bad news

Economic growth slows

Two days after the Federal Reserve released what was allegedly its most hawkish statement in months came a reminder that the path toward a rate hike won't be an easy one.

One of the main economic factors for Fed officials when it comes to assessing the right time to start hiking rates is wage growth, tied with the consumer spending that is supposed to follow. There was bad news on both fronts in economic data released Friday morning.

The big releases of the day were on personal income, which increased just 0.1 percent in September, missing even the meager consensus estimate of 0.2 percent, and the University of Michigan consumer confidence survey, which, at 90, whiffed as well with its second-lowest reading of the year.

Below the Wall Street radar, though, came another report that doesn't garner the headlines but is believed to be one watched closely by Fed Chair Janet Yellen and her fellow monetary policymakers: The employment cost index.