Report Volume 5-7

Report Volume 5-7

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1881 edition. Excerpt: ... a mean involves the conception of a central magnitude and the regular march of the groups increasing to a maximum and then again diminishing.3 "But suppose that the groups were groups of men of different occupations; then we should have either the largest group (possibly farmers), the maximum height, or the strongest group, numerically considered, might fall in the higher or lower numbers of inches. The mean would give the inherited tendency as modified by a certain kind of occupation. On the contrary the average would show the modifying 1 Dr. Robert?, in utilizing these observations to form a table (Table No. X in his Anthropometry), erroneously gives the mean as 53.50 instead of 52 inches. A reference to Diagram II shows that the greatest number of observations (158) falls at 53 inches; while he draws the mean line (.8 50) between 124 and 128 observations. In several other places in this table his means are formed in an equally arbitrary manner.. Dr. Bowditch remarks that in his tables the figures do not increase and diminish with the regularity which a conformity to Quetelet's law demands; but that his observations at each age are comparatively few in number, and that more numerous measurements, or a distribution of the observations in larger groups would doubtless cause the appearance of a closer agreement with the law. But when we remember that Dr. Bowditch's observations number over twenty-four thousand, the obtainmg of a larger number seems almost impracticable. 1 Edinburgh Review, No. CLXXXV, July, 1850, Vol. XCII, p. 1. The Growth of Children. influence of all the occupations, and under the given circumstances the height to which any individual might attain. When the data as to race are unknown the mean would, of course, be useful....
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Product details

  • Paperback | 220 pages
  • 189 x 246 x 12mm | 399g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236534980
  • 9781236534989