Type I and type II errors — In statistics, the terms Type I error (also, α error, or false positive) and type II error (β error, or a false negative) are used to describe possible errors made in a statistical decision process. In 1928, Jerzy Neyman (1894 1981) and Egon… … Wikipedia
Free trade debate — Free trade is one of the most debated topics in economics of the 20th and 21st century Fact|date=December 2007. Arguments over free trade can be divided into economic, moral, and socio political arguments. The academic debate among economists is… … Wikipedia
Protocol data unit — In telecommunications, the term protocol data unit (PDU) has the following meanings: #Information that is delivered as a unit among peer entities of a network and that may contain control information, address information, or data. #In layered… … Wikipedia
Blood type — (or blood group) is determined, in part, by the ABO blood group antigens present on red blood cells. A blood type (also called a blood group) is a classification of blood based on the presence or absence of inherited antigenic substances on the… … Wikipedia
United States Postal Service — This article is about the government agency. For individual post offices, see U.S. Post Office (disambiguation). For the cycling team, see Discovery Channel Pro Cycling Team. USPS redirects here. For the non profit boating safety and education… … Wikipedia
postal system — System that allows persons to send letters, parcels, or packages to addressees in the same country or abroad. Postal systems are usually government run and paid for by a combination of user charges and government subsidies. There are early… … Universalium
Letter box — This article is about boxes for depositing letters. For video framing, see letterbox. For the type of interprocess communication, see MailSlot . A letter box, letterbox, letter plate, letter hole, mail slot, or mailbox is a receptacle for… … Wikipedia
List of Mobile Suit Gundam 00 mobile units — This is a list of fictional mobile units from the Mobile Suit Gundam 00 .Celestial BeingIn Mobile Suit Gundam 00 , the term Gundam is the generic designation of a line of unique and highly effective mobile unit developed by Celestial Being .As of … Wikipedia
Plasma (physics) — For other uses, see Plasma. Plasma lamp, illustrating some of the more complex phenomena of a plasma, including filamentation. The colors are a result of relaxation of electrons in excited states to lower energy states after they have recombined… … Wikipedia
135th Airlift Group — Infobox Military Unit unit name= 135th Airlift Group caption= 135th Airlift Group emblem dates= 1955 1958, 1962 1996, 1999 Present country= United States allegiance= branch= United States Air Force/Air National Guard type= role= Tactical Airlift… … Wikipedia
Staples Inc. — STAPLES redirects here. For other uses, see Staples (disambiguation). Staples Inc. Type Public (NASDAQ: SPLS) Industry … Wikipedia