Much of this data is scattered across the Web and of variable quality.

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The variable quality of euro sovereign bonds is now much harder to ignore.

ECONOMIST: In a world of ugly currencies, the dollar is sitting pretty

Mr Bayley said the Dome's proposed contents appeared to be of variable quality and singled out the controversial Mother and Child figures.

BBC: Battle of the Dome continues

Sounds like an increase in freedom and liberty to me: even if the art produced is of highly variable quality.

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Provincial education departments are of variable quality: the provincial education minister in KwaZulu-Natal refused to show up for work for several weeks last year because, she said, her office was bewitched.

ECONOMIST: A fillip for South Africa��s schools

In his book about his career in policing, Sir Ian also condemned the Independent Police Complaints Commission (IPCC) for what he described as the "ridiculous delays" and "variable quality" of its inquiry into the 2005 shooting of Jean Charles de Menezes.

BBC: Blair criticises Tory police plan

The fact of the matter is that you can at once believe that socioeconomic factors and other input-level factors are hugely determinative of student outcomes, and that we should be cognizant of that fact when considering teacher quality, AND that education quality is a meaningful variable in arriving at student outcomes, and we should continue to subsidize public education as a society.

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However, the quality of social services is variable and in some cases it is very poor.

BBC: Elderly women

However, the quality of the collection has been variable.

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Early studies suggest that the quality of Sure Start child care is variable.

ECONOMIST: CHILD CARE: The nappy vote | The

Even though there is plenty of evidence that the quality of the teachers is the most important variable, teachers' unions have fought against getting rid of bad ones and promoting good ones.

ECONOMIST: The biggest barrier to public- sector reform are the unions

To account for the sleep variable, researchers in this study kept close tabs on the duration and quality of sleep of the participants.

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