1.   Although each series will get a general rating based on its usual content, they can fluctuate from week to week.

2.   The ratings were based on the subjective judgement of one person.

3.   Any pollster worth his paycheck knows that political approval ratings are based almost entirely on economic concerns.

4.   Companies whose ratings are based only on financial reports will be identified with a small letter q, after their capital letter rating.

5.   Gomez bases its ratings on customer questionnaires, its own observations of the Web sites and interviews with the brokerage executives.

6.   Fund-rating services typically base risk ratings on volatility.

7.   Ideally, P ratings should be based on a range of configurations.

8.   Ratings are based on service, knowledge and performance.

9.   Ratings are largely based on the lowest-performing ethnic or socio-economic group in a school.

10.   Ratings are based on a comparison of how a team does vs. how it was projected to do.