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In the empirical sciences, the so-called three-sigma rule of thumb (or 3 σ rule) expresses a conventional heuristic that nearly all values are taken to lie within three standard deviations of the mean, and thus it is empirically useful to treat 99.7% probability as near certainty. [2]
1 troy ounce of four nines fine gold (999.9) Nines are an informal logarithmic notation for proportions very near to one or, equivalently, percentages very near 100%. Put simply, "nines" are the number of consecutive nines in a percentage such as 99% (two nines) [1] or a decimal fraction such as 0.999 (three nines).
According to the Economic Policy Institute as of 2018 (based on data preceding 1970s to 2015), all households (national) with incomes less than $421,926 belonged to the lower 99% of wage earners. [47] Data on the minimum yearly income to be considered among the 1% vary per source, [48] ranging from about $500,000 [49] to $1.3 million. [46]
Our bodies have 3 billion genetic building blocks, or base pairs, that make us who we are. And of those 3 billion base pairs, only a tiny amount are unique to us, making us about 99.9% genetically ...
In general, the number of nines is not often used by a network engineer when modeling and measuring availability because it is hard to apply in formula. More often, the unavailability expressed as a probability (like 0.00001), or a downtime per year is quoted. Availability specified as a number of nines is often seen in marketing documents.
All subatomic particles must be one or the other. A composite particle may fall into either class depending on its composition. In particle physics, a fermion is a subatomic particle that follows Fermi–Dirac statistics. Fermions have a half-odd-integer spin (spin 1 / 2 , spin 3 / 2 , etc.) and obey the Pauli exclusion principle.
80% of all users 5 edits 10 top 10% of all users top 4,800,000 of all users 90% of all users 10 edits 20 top 5% of all users (the autoconfirmed) top 2,420,000 of all users 95% of all users 100 edits 100 top 1% of all users top 485,000 of all users 99% of all users 500 edits 400 top 0.25% of all users (the extended confirmed) top 73,383 of all users
This is an accepted version of this page This is the latest accepted revision, reviewed on 1 January 2025. This article needs to be updated. Please help update this article to reflect recent events or newly available information. (March 2022) World map of countries shaded according to the literacy rate for all people aged 15 and over This is a list of countries by literacy rate. The global ...