13 – Postcard to Frederick Smith from Francis Galton, 16 Feb 1898
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The copyright of this material belongs to descendants of the creator. Images are permitted for reuse under a Creative Commons, Attribution, Non-commercial license.
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[FS/3/3/2/13]
The following phrase in my letter was slack & inexact:-
“I make the mean error to be about 6 lbs” It should have been “I make the mean of all the differences in the two column to be about 6lbs.”
From one point of view of the problem the distinction is important: i.e. if pairs of entries in the 2 columns be considered as independent estimates of the same unknown facts.
F. Galton
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