One thing I would add is a correlation between age and price.

There was no correlation, the company said, between price and quality.

The relationship between price and quality is hard to match in wine from any other region.

For wine, there is no connection between price and quality.

The result was a difference between costs and prices that added up to some of the best profits many had ever seen.

In all of its advertising, he said, "we are looking for the right balance between price and products."

We found some correlation between price and quality, but not entirely.

What's the logical connection between water and the price of gas?

"You know the relationship between price and value in American culture is at best tenuous," he said.

There does not appear to be any correlation between price and sales.