As it turns out, the survey contained information that can help address this issue.

The surveys are voluntary and contain ten questions about the school's boarding provision.

Together, the two surveys contained information on a representative group of about 760,000 Americans, from their political attitudes to their reading and television habits.

While legitimate surveys do contain questions about personal characteristics, they are not intended to learn information about specific individuals.

Despite these challenges, this year's survey also contains some very promising trends.

The survey contains an interesting insight into the mood of Democratic voters nationally.

The whole survey contains - at my last count - over 500 questions.

For example, a survey of 1000 people may contain 100 people from a certain ethnic or economic group.

Still, the survey contained little good news for the President.

The survey contained questions about family background and educational and occupational aspirations.