Propagation of uncertaintyIn statistics, propagation of uncertainty (or propagation of error) is the effect of variables' uncertainties (or errors, more specifically random errors) on the uncertainty of a function based on them. When the variables are the values of experimental measurements they have uncertainties due to measurement limitations (e.g., instrument precision) which propagate due to the combination of variables in the function. The uncertainty u can be expressed in a number of ways. It may be defined by the absolute error Δx.
Marginal costIn economics, the marginal cost is the change in the total cost that arises when the quantity produced is incremented, the cost of producing additional quantity. In some contexts, it refers to an increment of one unit of output, and in others it refers to the rate of change of total cost as output is increased by an infinitesimal amount. As Figure 1 shows, the marginal cost is measured in dollars per unit, whereas total cost is in dollars, and the marginal cost is the slope of the total cost, the rate at which it increases with output.
Age of DiscoveryThe Age of Discovery or the Age of Exploration, part of the early modern period and largely overlapping with the Age of Sail, was a period from approximately the 15th century to the 17th century, during which seafarers from a number of European countries explored, colonized, and conquered regions across the globe. The extensive overseas exploration, particularly the European colonisation of the Americas, with the Spanish and Portuguese at the forefront, later joined by the Dutch, English, and French, marked an increased adoption of colonialism as a government policy in several European states.
Individual sportAn individual sport is a sport in which participants compete as individuals. However, team competitions within individual sports also occur, such as the Davis Cup and the Fed Cup. History of sport Athletics Badminton Biathlon Billiards Bodybuilding Boxing Bowling Bowls Bullfighting Calisthenics Canoeing Caving Chess Croquet Crossfit Cycling Dance Darts Disc golf Diving Equestrian Hang Gliding Fencing Figure skating Golf Gymnastics Knife throwing Martial arts Mixed martial arts Orienteering Pool Powerliftin
Chronology of European exploration of AsiaThis is a chronology of the early European exploration of Asia. 515 BC: Scylax explores the Indus and the sea route across the Indian Ocean to Egypt. 330 BC: Alexander the Great conquers parts of Central Asia and parts of northwestern Pakistan 300 BC: Seleucus Nicator, founder of the Seleucid Empire, forays into northwestern India but is defeated by Chandragupta Maurya, founder of the Maurya Empire, and they become allies soon after.
