In statistics, a population is the group on which information is being gathered and analyzed. A sample is a representative selection of the population.

The public-use file includes a representative 1% one-year sample of the entire U.S. population, a 3% three-year sample and a 5% five-year sample obtained from the Integrated Public Use Microdata ...

Turkey’s switch in 2011 reduced census costs from US$48.3 million to US$13.9 million while improving data quality and timeliness, and nearly 80% of countries used tablets or smartphones for data ...

What we know is that New Zealand births have fluctuated up and down since the 1990s, with a maximum of 64,390 in 2010 and ...

Population data is essential to inform the design of an assessment, such as providing a sampling frame, and to help facilitate analysis. Official statistics of UNHCR and nowcasting estimates are ...

The Catholic population in Europe fell by nearly half a million people in 2022 but continued to increase in every other part of the world, according to data released by the Vatican this week.

Unstable federal funding puts at risk the government statistics used to track the U.S. economy and population, officials and data users warn. That's before any cuts by President Trump and Congress.

Russia has moved to classify key demographic statistics following a dramatic collapse in its birth rate, which has plunged to levels not seen since the late 18th or early 19th century, according ...

The U.S. unauthorized immigrant population has likely grown over the past two years, based on several alternative data sources. For example, encounters with migrants at U.S. borders reached record ...

The over-65s made up almost 18% of the population in 2023 compared to less than 14% in 2003. In 2023, the number of over-65s rose by 2.1% from 335,400 to 342,500 while the population as a whole ...