Abstract
I AM pleased to be able to say, with reference to criticisms by your correspondents on the trustworthiness of the head measures at Cambridge, and on the deductions made by myself from the results obtained by Dr. Venn after he had discussed the first batch of them, that he is now about to discuss a second batch. The observations that have since accumulated are about equal in number to those already dealt with, and the new results will afford an efficient check upon the value of those already published. I hope also that Dr. Venn may find adequate material to determine the “probable error” of a single head measure, by means of the differences (discussed under obvious restrictions) between the recorded measures of the same persons at different times. We shall then be better able than we are now to estimate the degree of reliance to be placed on the mean value of any given number of head measures.
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GALTON, F. Head Measures at Cambridge. Nature 40, 643 (1889). https://doi.org/10.1038/040643a0
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DOI: https://doi.org/10.1038/040643a0
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