An Introduction to the theory of statistics

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Monograph

Identifikator:: 1751730271

URN:: urn:nbn:de:zbw-retromon-127610

Document type:: Monograph

Author:: Yule, George Udny http://d-nb.info/gnd/12910504X

Title:: An Introduction to the theory of statistics

Edition:: 8. ed. rev

Place of publication:: London

Publisher:: Griffin

Year of publication:: 1927

Scope:: XV, 422 S; Ill., Diagr

Digitisation:: 2021

Collection:: Economics Books

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Chapter

Document type:: Monograph

Structure type:: Chapter

Title:: Part I. The theory of atributes

Collection:: Economics Books

annual production of straw in 5-year periods is shown below together with the production in 1925. AVERAGE ANNUAL PRODUCTION OF STRAW IN ENGLAND AND WALES. Thousands of Tons. Period. 1906-10 1911-15 1916-20 1921-25. - 1925 - Wheat Straw. Re Barley Straw. 2,214 1,533 2,170 1,245 2,326 | 1,206 10967. 1" 1.004 1.650 975 Oat Straw. 2,448 1,927 2,248 1,827 1.735 kf i Total. 6,213 5,342 5,780 4,798 4.360 The average annual production of straw of all kinds has decreased by no less than 23 per cent. over the period covered by this table, the decrease being due almost wholly to lighter yields per acre as the acreage under the three cereals taken together has declined by less than 3 per cent. Vetches or Tares—The total area under this crop in 1925 was 88,498 acres, distributed throughout the country with fair regularity except in the north-western division and in Wales, where the area is negligible. Hampshire and Wiltshire are the counties with the largest acreage, each with about 8,000 acres, but several counties in the eastern half of the country are little less important. From estimates made by the Crop Reporters it appears that about 26 per cent. of the area of vetches in 1925 was harvested ripe, about 14 per cent. cut for hay, and the remaining 60 per cent. cut for green fodder or silage. There are appreciable differences between the different divisions in this respect, how- ever, as will be seen from the table on page 29. It is clearly in the arable counties that the crop is to a large extent harvested ripe, whereas in the pastoral counties the great bulk of the crop is fed green to cattle. The yield of vetches harvested ripe in 1925 was estimated at 12} cwt. of grain per acre, the north-eastern, south-eastern and east midland divisions averaging between 13 and 14 cwt., but the eastern division harvested less than 11 cwt. The average yield of vetches hay was about 29 cwt. per acre, yields being fairly uniform in the different divisiong but heaviest in the north. The area reported as harvested ripe was 23,000 acres with a production of 14,500 tons of grain, while 12,000 acres were cut for hay, giving a yield of 17,700 tons. In addition, over 53,000 acres were cut for green fodder or silage,

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