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Random vs Irrational - What's the difference?

random | irrational |

As nouns the difference between random and irrational

is that random is a roving motion; course without definite direction; lack of rule or method; chance while irrational is a real number that can not be expressed as the quotient of two integers, an irrational number.

As adjectives the difference between random and irrational

is that random is having unpredictable outcomes and, in the ideal case, all outcomes equally probable; resulting from such selection; lacking statistical correlation while irrational is not rational; unfounded or nonsensical.

random

English

Noun

(en noun)
  • A roving motion; course without definite direction; lack of rule or method; chance.
  • * (1591-1674)
  • *:Counsels, when they fly / At random , sometimes hit most happily.
  • *Sir (Walter Scott) (1771-1832)
  • *:O, many a shaft, at random sent, / Finds mark the archer little meant!
  • (label) Speed, full speed; impetuosity, force.
  • *:
  • *:they were messagers vnto kyng Ban & Bors sent from kynge Arthur / therfor said the viij knyghtes ye shalle dye or be prysoners / for we ben knyghtes of kyng Claudas And therwith two of them dressid theire sperys / and Vlfyus and Brastias dressid theire speres and ranne to gyder with grete raundon
  • *(Edward Hall) (1497-1547)
  • *:For courageously the two kings newly fought with great random and force.
  • *1624 , John Smith, Generall Historie , in Kupperman 1988, page 144:
  • *:Fortie yards will they shoot levell, or very neare the marke, and 120 is their best at Random .
  • :
  • :
  • (label) The direction of a rake-vein.
  • :(Raymond)

    • Synonyms

    * force, momentum, speed, velocity * (unimportant person) nobody, nonentity

    Adjective

    (en adjective)
  • Having unpredictable outcomes and, in the ideal case, all outcomes equally probable; resulting from such selection; lacking statistical correlation.
    • The flip of a fair coin is purely random .
    The newspaper conducted a random sample of five hundred American teenagers.
    The results of the field survey look random by several different measures.
  • * July 18 2012 , Scott Tobias, AV Club The Dark Knight Rises [http://www.avclub.com/articles/the-dark-knight-rises-review-batman,82624/]
    • Where the Joker preys on our fears of random , irrational acts of terror, Bane has an all-consuming, dictatorial agenda that’s more stable and permanent, a New World Order that’s been planned out with the precision of a military coup.
  • (mathematics) Of or relating to probability distribution.
    • A toss of loaded dice is still random , though biased.
  • (computing) Pseudorandom; mimicking the result of random selection.
    • The rand function generates a random number from a seed.
  • (somewhat colloquial) Representative and undistinguished; typical and average; selected for no particular reason.
    • A random American off the street couldn't tell the difference.
  • (somewhat colloquial) Apropos of nothing; lacking context; unexpected; having apparent lack of plan, cause or reason.
    • That was a completely random comment.
    The teacher's bartending story was interesting, but random .
    The narrative takes a random course.
  • (colloquial) Characterized by or often saying random things; habitually using non sequiturs.
    • You're so random !

    Synonyms

    * (having unpredictable outcomes) * (of or relating to probability distribution) stochastic * (pseudorandom) pseudorandom * (representative and undistinguished) average, typical * (lacking context) arbitrary, unexpected, unplanned

    Derived terms

    * at random * non-random * pseudorandom * randomer * randomise, randomize * randomness * random number * randomly * randomology * randomosity

    See also

    * (Randomness)

    Anagrams

    *

    irrational

    English

    Adjective

    (en adjective)
  • Not rational; unfounded or nonsensical.
    • an irrational decision
  • * July 18 2012 , Scott Tobias, AV Club The Dark Knight Rises [http://www.avclub.com/articles/the-dark-knight-rises-review-batman,82624/]
    • Where the Joker preys on our fears of random, irrational acts of terror, Bane has an all-consuming, dictatorial agenda that’s more stable and permanent, a New World Order that’s been planned out with the precision of a military coup.
  • (mathematics, arithmetic, number theory, not comparable) Of a real number, that cannot be written as the ratio of two integers.
    • The number π is irrational .

    Antonyms

    * (mathematics) rational

    Hyponyms

    * (mathematics) transcendental

    Derived terms

    * irrational number * irrationality * irrationalize * irrationalization

    Noun

    (en noun)
  • A real number that can not be expressed as the quotient of two integers, an irrational number.
  • * 1946 , (Bertrand Russell), History of Western Philosophy , I.24:
    • The square root of 2, which was the first irrational to be discovered, was known to the early Pythagoreans, and ingenious methods of approximating to its value were discovered.