"Traditionally, rates are based on variables like gender and age," he said.

How much higher depends on the season and other variables.

"But we can all get more sophisticated by focusing on different variables," he said.

"You must be working on fairly remote variables if you're reduced to asking me."

Changes in the money supply could have effects on real variables like output.

A degree of freedom may be any useful property that is not dependent on other variables.

This depends on the area to be inspected, industry, and other variables.

He is noted for work on several complex variables.

The process used most likely depended on variables such as speed and budget.

This can of course depend on different conditions, variables and aspects.