In India many more sampling points have been established, and in all countries better survey methods, relying on surveyors knocking on doors rather than asking questions at clinics, have gathered data from more representative samples.
Cardiac care expert Professor Philip Hannaford, of the department of primary care at Aberdeen University, echoed the concerns that the data might not be representative of the population as a whole.
Data was weighted to be representative of each city as a whole.
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The CDC cautions that the latest data aren't nationally representative and that the rates of these disorders may vary across the country.
The authors say they are confident that the data from Byrd Station is representative of the region because the scientific outpost sits on a plateau and conditions are essentially uniform for a considerable distance.
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The data was weighted to be demographically representative of all British adults.
India traditionally follows wholesale data closely, although the more representative consumer inflation numbers introduced a couple of years ago are expected to become the benchmark in some years.
Second, a few data points should not be taken as representative of what actually is happening overall.
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The beta value is calculated by comparing price movements of the security and the price movement of the representative index over the past 2 years of weekly data.
Net Applications acknowledges that visitors to its customers' websites likely aren't representative of all Internet users, and weights the data by the population of Internet users world-wide, according to the U.S. Central Intelligence Agency's World Factbook.
And again, this data will not be drawn from any sort of representative sample of global humanity, but from a narrow subset about which we already know a lot.
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Senior sales representative is the third happiest job in America, according to CareerBliss data.
The Consumer Price Index program produces monthly data on changes in the prices paid by urban consumers for a representative basket of goods and services.
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The survey was designed to be representative of the telephone owning population of the UK. Weighting was applied to the data to bring it into line with national profiles.
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The goods and services under inspection--including housing, transportation, food, leisure and household supplies--are representative of executive spending patterns, and the selection of the cities reflects the request for corresponding data from the groups that use the study's findings.
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