observational

And without a concrete way to measure the incidence of domestic violence, it is purely observational.

When a scientific truth arises, it is so because of observational and experimental consensus.

Why do you prefer a purely observational approach that immerses the viewer in the events on the Maidan without any commentary?

This was followed by Kronick in 2009, the largest observational study ever done of insurance and mortality.

I'm just saying that this possibility is within the bounds of what at least some solid observational studies have found.

In twelve months observational astronomy had made such a bound as it has never made before or since.

Religion also has its observational work in the larger and possibly more arduous manner.

I assure you, Mr. Payne, our visit to Earth was intended purely for observational purposes!

Only in this way can the error of regarding geography as a purely observational natural science be corrected.

During that period there came to the front the founder of accurate observational astronomy.