ANNUAL SURVEY OF MANUFACTURES: 1951 Table 3.-- GENERAL STATISTICS FOR THE UNITED STATES, BY GEOGRAPHIC swithheld because the estimate did not meet publication standards on the basis of consistency review. The totals for the South Atlantic Division, however, include this figure. The 1951, 1950, and 1949 "Average number of employees" is based on reported employment totals for the pay roll periods ended nearest the 15th of March, May, August, and November. For 1947, an average based on the mid-month employment for 12 months was used. 2Value of products less cost of materials, supplies, fuel, electric energy, and contract work. 3The percentage standard errors shown in this column indicate the differences that can be expected between the estimates and comparable complete canvass totals, because of sampling fluctuations. The estimates will differ from the complete totals by less than: (i) The percentage shown: approximately 2 times out of 3. (ii) Twice the percentage shown: approximately 19 times out of 20. ments. "The totals shown for 1951, 1950, and 1949 include employees separately reported at central administrative offices and auxiliary establish "To maintain comparability with 1951 and 1949 employment estimates, the United States, Division, and State employment totals for 1950 have been adjusted to include employment at plants not in production during the year. Employment at these plants is estimated at 82,000 during 1950. In addition, the 1950 estimates for a few States have been revised for other reasons and, therefore, differ from previously published data. "The totals shown for 1947 represent employment data only at operating manufacturing establishments. 7The data for North Dakota and South Dakota have been combined because of the high standard errors associated with the survey estimates for each State. CHAPTER II: Table 1.--GENERAL STATISTICS FOR INDUSTRY GROUPS (Dollar figures and man-hours are in THOUSANDS. Industries (4-digit) for which data are shown were selected, after review for consistency with "Value added by manufacture". With few exceptions, the industries shown have standard errors of 15 percent or less for these entries. Standard employment and value added. Industry group totals (2-digit and 3-digit) include the estimates for all the component industries, regardless of industry (3-digit) groups. Unpublished estimates, including those which can be derived by subtraction, may have standard errors considerably Manufactures volume.) 20 GENERAL STATISTICS AND SELECTED INDUSTRIES: 1951, 1950, 1949 AND 1947 other Census series and related data, on the basis of the standard error of estimate associated with figures for "All employees, number" and errors of the other general statistics estimates for an industry are usually of the same general magnitude as the standard errors shown for whether or not separate data are shown for the individual industries. Totals are shown for all major (2-digit) groups and for practically all in excess of 15 percent. For a complete listing of titles and descriptions of the manufacturing industries see Appendix C, 1947 Census of 21 |