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  2. Weighted-average life - Wikipedia

    en.wikipedia.org/wiki/Weighted-Average_Life

    Time until 50% of the principal has been repaid WAL is a mean, while "50% of the principal repaid" is a median; see difference between mean and median. Since principal outstanding is a concave function (of time) for a flat payment amortizing loan, less than half the principal will have been paid off at the WAL. Intuitively, this is because most ...

  3. List of solar eclipses visible from the British Isles - Wikipedia

    en.wikipedia.org/wiki/List_of_solar_eclipses...

    This is a partial list of solar eclipses visible from Britain and Ireland between AD 1 – AD 2091.. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partially obscuring Earth's view of the Sun. Below is a complete list of total and annular eclipses visible anywhere within the modern extent of the United Kingdom between AD 1 and AD 2090 [1] and a ...

  4. Mathematics of bookmaking - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_bookmaking

    In gambling parlance, making a book is the practice of laying bets on the various possible outcomes of a single event. The phrase originates from the practice of recording such wagers in a hard-bound ledger (the 'book') and gives the English language the term bookmaker for the person laying the bets and thus 'making the book'.

  5. Video games in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/Video_games_in_the_United...

    Up until the 1970s, British amusement arcades typically had mechanical arcade games, electro-mechanical games and pinball machines. Arcade video games arrived with the 1973 release of Pong by Atari, Inc. Pong and other similar sports video game clones became popular in British arcades up until their popularity declined a year later in 1974, after which video games were dismissed as a fad.

  6. List of United Kingdom general elections - Wikipedia

    en.wikipedia.org/wiki/List_of_United_Kingdom...

    This is a list of United Kingdom general elections (elections for the House of Commons) since the first in 1802.The members of the 1801–1802 Parliament had been elected to the former Parliament of Great Britain and Parliament of Ireland, before being co-opted to serve in the first Parliament of the United Kingdom, so that Parliament is not included in the table below.

  7. Air Passenger Duty - Wikipedia

    en.wikipedia.org/wiki/Air_Passenger_Duty

    The rate for UK domestic flights is due to halve to £6.50 from April 2023, while the rate for band B is due to increase to £84 in April 2022. From April 2023 band B is set to be split into two bands: the rate for journeys of 2,000–5,500 miles is set to rise to £87, and the rate for journeys over 5,500 miles is set to rise to £91.

  8. Pound sterling - Wikipedia

    en.wikipedia.org/wiki/Pound_sterling

    UK inflation history UK bonds 1960–2022: the yield on UK Government benchmark ten-year bonds increased to over 15% in the 1970s and early 1980s. James Callaghan became Prime Minister in 1976. He was immediately told the economy was facing huge problems, according to documents released in 2006 by the National Archives . [ 95 ]

  9. Perpetuity - Wikipedia

    en.wikipedia.org/wiki/Perpetuity

    To give a numerical example, a 3% UK government war loan will trade at 50 pence per pound in a yield environment of 6%, while at 3% yield it is trading at par. That is, if the face value of the loan is £100 and the annual payment £3, the value of the loan is £50 when market interest rates are 6%, and £100 when they are 3%.