The term cosmic variance is the statistical uncertainty inherent in observations of the universe at extreme distances. It has three different but closely related meanings: It is sometimes used, incorrectly, to mean sample variance – the difference between different finite samples of the same parent population.
The term cosmic variance is the statistical uncertainty inherent in observations of the universe at extreme distances.
The term cosmic variance is the statistical uncertainty inherent in observations of the universe at extreme distances. It has three different but closely BackgroundPhilosophical issuesSimilar problemsReferences
Cosmic Variance was a collaborative weblog discussing physics, astrophysics, and other topics, written by JoAnne Hewett, Mark Trodden, Sean Carroll, Risa Wechsler, Julianne Dalcanton, John Conway, and Daniel Holz.
It was the successor to Carroll's earlier blog Preposterous Universe, which began in early 2004 and ran through much of 2005.
The blog's name came from the cosmology concept of cosmic variance.
