"It just means there is no strong indicator," he said.

In our evolutionary past, these would also have been strong indicators of youth.

The purple eyes, of course, were a strong indicator.

"This is a strong indicator that we can be in the hunt for the top three," he said.

If he shows no interest in going there with you, that's a pretty strong indicator of where things are.

But kindness is the strongest indicator for a successful long-term relationship.

"Those are all strong indicators things are going to take off."

In the past, a country's dominant religion was a strong indicator of its birthrate.

Despite all the strong indicators, some business leaders are worried.

In a fair market, a parent's socioeconomic status should not be a strong indicator of the child's success.