Ronald Fisher - Statistical Methods for Research Workers (1925)

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Critical tests of this kind may be called tests of significance, and when such tests are available we may discover whether a second sample is or is not significantly different from the first.

Ronald Fisher

No human mind is capable of grasping in its entirety the meaning of any considerable quantity of numerical data.

Ronald Fisher

The preliminary examination of most data is facilitated by the use of diagrams. Diagrams prove nothing, but bring outstanding features readily to the eye; they are therefore no substitutes for such critical tests as may be applied to the data, but are valuable in suggesting such tests, and in explaining the conclusions founded upon them.

Ronald Fisher

There is no more pressing need in connection with the examination of experimental results than to test whether a given body of data is or is not in agreement with any suggested hypothesis.

Ronald Fisher