Systematic sampling is straightforward and low risk, offering better control. However, it may introduce sampling errors and ...

Data from national surveys show rising political jeopardy for president as voter concern over economy and health care ...

Among Kyiv residents, 59% consider giving up Donbas totally unacceptable, while 31% are ready to accept it. In the west of ...

Federal law requires schools to verify free and reduced lunch eligibility for a random sample of recipients, but a new bill ...

Kioxia has begun shipping samples of a new UFS 4.1 embedded flash memory family that uses QLC NAND, aiming to push higher ...

Only 21% of Ukrainians expect the war to end in the coming weeks or at least in the first half of 2026, compared with 33% in ...

Generative AI models have been used to create enormous libraries of theoretical materials that could help solve all kinds of ...

The majority (52%) of Ukrainians categorically reject the proposal to transfer the entire Donbas under the control of the ...

This example illustrates the use of regression analysis in a simple random cluster sampling design. The data are from S rndal, Swenson, and Wretman (1992, p. 652). A total of 284 Swedish ...

The roughly 40 million Americans who get drinking water from wells are at particular risk when harmful forever chemicals ...

The “one big breakthrough” pattern suggests that total citation counts can mislead. A researcher with one highly-cited paper and several uncited ones may have a more impactful trajectory than one with ...

A new Wharton study explains why stock returns aren’t random. Correlation neglect causes market overreaction, momentum, and reversals investors consistently misprice.