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 ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Thomas J. Brock is a CFA and CPA with more ...

Link found between super-agers, or people with exceptional longevity, to inherited DNA from Ice Age hunter-gatherer ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

The world’s largest bee is a solitary insect known from a small cluster of islands in eastern Indonesia. Wallace’s giant bee, ...

Cluster headaches can last from 15 minutes to several hours at a time, and can recur daily for weeks in a row, and then go away until another “cluster” episode. Although there is no known cure for ...

When Larry Janssen learned that one of his most frequently used land sales databases was no longer available, the South ...

Kuniko Limited (ASX: KNI), a mineral exploration company with a diversified portfolio of projects, has announced encouraging ...

In the damp understory of forests in Taiwan, mainland Japan, and Okinawa, a plant called Balanophora can fool you at first ...

The first study from GreenDrill—a project co-led by the University at Buffalo to collect rocks and sediment buried beneath the Greenland Ice Sheet—has found that the Prudhoe Dome ice cap was ...

New research conducted in Portugal offers insight into the psychological roots of political ideology. The findings suggest ...

A research team at the British Museum, led by Nick Ashton and Rob Davis, reports evidence that ancient humans could make and ...