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Size of Sample Study, With Particular Reference to the Pig Survey of the Bureau of Agricultural Economics

Author

Listed:
  • Smith, Bradford B.
  • Ezekiel, Mordecai

Abstract

Report Introduction: A considerable portion of economic forecasting is based on the "this year to last year" type of ratio. Using the semi-annual “Pig Survey" of the Division of Crop and Livestock Estimates, Bureau of Agricultural Economics, as an example, the reported number of sows farrowed this year and the reported number of sows farrowed last year are tabulated and the ratio between them taken as the ratio of the hog crop to come this year as compared with the known hog crop last year. The occasion for this study was to test the statistical accuracy of this "Sows farrowed this year to sows farrowed last year" ratio. To accomplish this required the application of some known theory and the development of some new. This paper accordingly aims (1) to set forth the theoretical considerations in measuring the accuracy of such a year-year ratio, (2) test it by application to a portion of the records used in making a pig survey, (3) draw certain conclusion specifically related to the pig survey.

Suggested Citation

  • Smith, Bradford B. & Ezekiel, Mordecai, 1924. "Size of Sample Study, With Particular Reference to the Pig Survey of the Bureau of Agricultural Economics," Miscellaneous Publications 330879, United States Department of Agriculture, Economic Research Service.
    • Handle: RePEc:ags:uersmp:330879
    DOI: 10.22004/ag.econ.330879
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