Ronald Fisher Quotes

Quotes about:

• To consult the statistician after an experiment is finished is often merely to ask him to conduct a post mortem examination. He can perhaps say what the experiment died of.

  Ronald Fisher

  Examination, Experiments, Posts

  Presidential Address to the First Indian Statistical Congress, Sankhya 4, 14-17, 1938.

  55 Copy quote

• The best time to plan an experiment is after you've done it.

  Ronald Fisher

  Done, Plans, Experiments

  14 Copy quote

• The statistician cannot evade the responsibility for understanding the process he applies or recommends.

  Ronald Fisher

  Responsibility, Understanding, Process

  19 Copy quote

• We have the duty of formulating, of summarizing, and of communicating our conclusions, in intelligible form, in recognition of the right of other free minds to utilize them in making their own decisions.

  Ronald Fisher

  Decision, Mind, Summarizing

  "Chances Are: Adventures in Probability". Book by Michael Kaplan and Ellen Kaplan, 2003.

  54 Copy quote

• Experimental observations are only experience carefully planned in advance, and designed to form a secure basis of new knowledge.

  Ronald Fisher

  Knowledge, Science, Experience

  4 Copy quote

• Faith does not mean credulity...

  Ronald Fisher

  Credulity

  "Statistical Methods and Scientific Inference". Book by Ronald Fisher, 1956.

  29 Copy quote

• I believe that no one who is familiar, either with mathematical advances in other fields, or with the range of special biological conditions to be considered, would ever conceive that everything could be summed up in a single mathematical formula, however complex.

  Ronald Fisher

  Believe, Special, Fields

  "The evolutionary modification of genetic phenomena". Ronald Fisher, proceedings of the 6th International Congress of Genetics 1, 1932.

  4 Copy quote

• The more highly adapted an organism becomes, the less adaptable it is to any new change.

  Ronald Fisher

  Programming, Adapted, Adaptable

  19 Copy quote

• The analysis of variance is not a mathematical theorem, but rather a convenient method of arranging the arithmetic.

  Ronald Fisher

  Science, Pythagorean Theorem, Analysis

  "Statistics in agricultural research". Journal of the Royal Statistical Society, 1934.

  14 Copy quote

• The tendency of modern scientific teaching is to neglect the great books, to lay far too much stress upon relatively unimportant modern work, and to present masses of detail of doubtful truth and questionable weight in such a way as to obscure principles.

  Ronald Fisher

  Stress, Book, Teaching

  30 Copy quote

• Natural selection is a mechanism for generating an exceedingly high degree of improbability.

  Ronald Fisher

  Math, Degrees, Statistics

  "Evolution in Action". Book by Julian S. Huxley, 1953.

  9 Copy quote

• [Coining phrase "null hypothesis"] In relation to any experiment we may speak of this hypothesis as the "null hypothesis," and it should be noted that the null hypothesis is never proved or established, but is possibly disproved, in the course of experimentation. Every experiment may be said to exist only in order to give the facts a chance of disproving the null hypothesis.

  Ronald Fisher

  Order, Giving, Null

  "The Design of Experiments". Book by Ronald Fisher, 1935.

  20 Copy quote

• In scientific subjects, the natural remedy for dogmatism has been found in research.

  Ronald Fisher

  Research, Natural, Found

  "Eugenics, academic and practical". "The Eugenics Review" Journal, 1935.

  7 Copy quote

• No isolated experiment, however significant in itself, can suffice for the experimental demonstration of any natural phenomenon; for the "one chance in a million" will undoubtedly occur, with no less and no more than its appropriate frequency, however surprised we may be that it should occur to us.

  Ronald Fisher

  Science, May, Chance

  22 Copy quote

• The million, million, million ... to one chance happens once in a million, million, million ... times no matter how surprised we may be that it results in us.

  Ronald Fisher

  May, Matter, Chance

  "Heredity" Journal, 1973.

  8 Copy quote

• The statistician cannot excuse himself from the duty of getting his head clear on the principles of scientific inference, but equally no other thinking man can avoid a like obligation.

  Ronald Fisher

  Science, Men, Thinking

  30 Copy quote

• No aphorism is more frequently repeated in connection with field trials, than that we must ask Nature few questions, or, ideally, one question, at a time. The writer is convinced that this view is wholly mistaken. Nature, he suggests, will best respond to a logical and carefully thought out questionnaire; indeed, if we ask her a single question, she will often refuse to answer until some other topic has been discussed.

  Ronald Fisher

  Nature, Science, Views

  21 Copy quote

• No efforts of mine could avail to make the book easy reading.

  Ronald Fisher

  Book, Reading, Effort

  "The Genetical Theory of Natural Selection". Book by Ronald Fisher, 1930.

  20 Copy quote

• ... no scientific worker has a fixed level of significance at which from year to year, and in all circumstances, he rejects hypotheses; he rather gives his mind to each particular case in the light of his evidence and his ideas.

  Ronald Fisher

  Light, Years, Ideas

  16 Copy quote

• Modern statisticians are familiar with the notion that any finite body of data contains only a limited amount of information on any point under examination; that this limit is set by the nature of the data themselves, and cannot be increased by any amount of ingenuity expended in their statistical examination: that the statistician's task, in fact, is limited to the extraction of the whole of the available information on any particular issue.

  Ronald Fisher

  Data, Issues, Tasks

  17 Copy quote

• The best causes tend to attract to their support the worst arguments, which seems to be equally true in the intellectual and in the moral sense.

  Ronald Fisher

  Science, Support, Intellectual

  "Statistical Methods and Scientific Inference". Book by Ronald Fisher, 1956.

  8 Copy quote

• If one in twenty does not seem high enough odds, we may, if we prefer it, draw the line at one in fifty (the 2 per cent. point), or one in a hundred (the 1 per cent. point). Personally, the writer prefers to set a low standard of significance at the 5 per cent. point, and ignore entirely all results which fail to reach this level. A scientific fact should be regarded as experimentally established only if a properly designed experiment rarely fails to give this level of significance.

  Ronald Fisher

  Science, Odds, Giving

  24 Copy quote

• I believe sanity and realism can be restored to the teaching of Mathematical Statistics most easily and directly by entrusting such teaching largely to men and women who have had personal experience of research in the Natural Sciences.

  Ronald Fisher

  Believe, Teaching, Men

  16 Copy quote

• We can set no limit to human potentialities; all that is best in man can be bettered; it is not a question of producing a highly efficient machine, ... but of quickening all the distinctly human features, all that is best in man, all the different qualities, some obvious, some infinitely subtle, which we recognize as humanly excellent.

  Ronald Fisher

  Men, Quality, Different

  6 Copy quote

• If ... we choose a group of social phenomena with no antecedent knowledge of the causation or absence of causation among them, then the calculation of correlation coefficients, total or partial, will not advance us a step toward evaluating the importance of the causes at work.

  Ronald Fisher

  Groups, Statistics, Causes

  18 Copy quote

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