The physical examination and development of public school boys : based upon records of over 40,000 observations : a paper read before the Association on April 4th, 1899 / by Cecil Hawkins.

  • Hawkins, Cecil.
Date:
1900
Catalogue details

Licence: In copyright

Credit: The physical examination and development of public school boys : based upon records of over 40,000 observations : a paper read before the Association on April 4th, 1899 / by Cecil Hawkins. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    of approaching the subject, I had perhaps better explain briefly how the percentile grades are arrived at. The first thing to be done is to form a series of curves of distribu- tion of which the central curve in Fig. 2 is an example. This curve was formed to re23resent graphically the 0 ?Q LO 30 1^0 S-Q 60 70 gO VQ lOQ 70 ^9 0 /O ZO 30 ^0 SO 60 JO 90 JO 100 Fig. 2. manner in which the observed heights of 1,689 school boys of the age of 15, collected from various schools, were distributed. As a matter of fact I took in all boys whose ages did not differ from 15 by more than one month, and I may state, once for all, that that is the general system upon