I can make some fairly accurate observations about the state of the economy.

I could even make a fairly accurate guess what it was.

I think I've a fairly accurate assessment of your character.

In which case he's actually making a fairly accurate observation.

The name itself is a fairly accurate description of the process.

One must have a fairly accurate idea of the patient's weight.

"I think we could probably make a fairly accurate guess, though."

He described the water cycle in a fairly accurate way.

I think we've got a fairly accurate handle on your past, George.

Fairly accurate results can then be found by using potential theory.