Chapter I: SUMMARY STATISTICS Table 1.--GENERAL STATISTICS FOR MANUFACTURING INDUSTRIES IN THE UNITED STATES: 1849-1951 (Dollar figures are in THOUSANDS. Data for 1947-1951 include all establishments employing one or more persons at any time during the year; for 1921-1939, those with products valued at $5,000 or more; and for 1849-1919, those having products valued at $500 or more. For basis of revisions beginning with 1899, see 1947 Census of Manufactures volumes, GENERAL EXPLANATIONS Statistics for 1939 and earlier years.) Salaries and wages, total for the Wages, total added by manufacturer3 year) 1The figures for 1939-1951 include data for employees at manufacturing establishments who were engaged in distribution and in construction work. The extent to which data for such employees were included in the figures for earlier years is not known. 2The 1951, 1950, and 1949 "Average number of employees" is based on reported employment totals for the pay roll periods nearest the 15th of March, May, August, and November. For 1947, the number of "All employees" represents the average of 12 monthly figures; for 1939 and earlier years, it represents the sum of the average number of production workers for the year and the number of nonproduction workers reported for one pay roll period (usually in October). See 1947 Census of Manufactures volumes, GENERAL EXPLANATIONS Monthly and average employment. 3Value of products less cost of materials, supplies, fuel, electric energy, and contract work. For 1849 1933, cost of contract work was not subtracted from value of products in calculating value added by manufacture. See 1947 Census of Manufactures volumes, GENERAL EXPLANATIONS Value added by manufacture. "Data for 1951, 1950, and 1949 are estimates based on establishments' reports received in the Annual Survey of Manufactures. estimates, of course, vary from the totals that would have been obtained from a complete canvass as conducted in prior years; the relative magnitude of this sampling variation is indicated in Chapter I, table 2, in the column captioned "Standard error of estimate." The survey "The number of establishments classified as engaged primarily in manufacturing activities is estimated at 262,000 for 1951 and 260,000 for 1950. (These estimates have a standard error of 2 percent.) Because of sampling variation, and some differences in definitions, scope, etc., these totals differ to some extent from the establishment counts presented in the joint Census-BOASI publication County Business Patterns. "The totals shown for 1951, 1950, and 1949 include employees separately reported at central administrative offices and auxiliary establishments. 7To maintain comparability with 1951 and 1949 employment estimates, the employment total for 1950 has been adjusted to include employment at plants not in production at any time during the year. Employment at these plants is estimated at 82,000 during 1950. The extent to which data for such employees were included in the figures prior to 1949 is not known. 8The figures for 1939, but not for earlier years, have been revised on the basis of retabulation of the returns to exclude data for establishments classified as manufacturing in 1939 and prior years but classified as nonmanufacturing beginning with 1947. Value added by manufacture for 1939, prior to revision and on a basis comparable with 1937 and previous years, was $24.7 billion. See 1947 Census of Manufactures volumes, GENERAL EXPLANATIONS - Statistics for 1939 and earlier years. "Not revised to exclude data for establishments classified as manufacturing in 1939 and prior years but classified as non-manufacturing beginning with 1947 (See footnote 8). The estimates 10The 1939 figures for "All employees" were revised on the basis of estimates rather than by retabulation of the 1939 reports. were made in the following manner: for number of employees, by multiplying the retabulated figure for number of production workers by the ratio of all employees to production workers computed from the unrevised 1939 statistics; for salaries and wages, by multiplying the retabulated wage figure by the ratio for salaries and wages also derived from the unrevised 1939 statistics. 11Not including data for salaried officers of corporations and their salaries and, therefore, not strictly comparable with figures for other 12Reduced to gold basis. years. 13 ANNUAL SURVEY OF MANUFACTURES: 1951 Table 2.--GENERAL STATISTICS, BY INDUSTRY GROUPS: 1951, 1950, 1949 AND 1947 (Dollar figures and man-hours are in THOUSANDS. Only selected sample error percentages are shown; standard errors of the other general statistics estimates for an industry group are usually of the same general magnitude as the standard errors shown for employment and facture.) value added by manuStandard error All employees Number of estimates (percent) for columns: 3 manu facture2 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: "The logging industry (Industry 2411) was excluded for the 1947 Census of Manufactures, but included in the Annual Surveys of Manufactures. There was also some undercoverage in the 1950 and 1949 sample for this major industry group, especially in Industry 2411. The sample design for the 1951 Annual Survey of Manufactures was revised to correct the undercoverage in this industry. "Includes privately owned and/or operated establishments classified in Industry Group 19, "Ordnance and accessories." operated establishments are excluded from the annual survey. Government owned and Administrative office and auxiliary unit employment is based on the number of employees reported as of mid-March under the Old-Age and Survivors Insurance program. The administrative and auxiliary employment and pay roll figures for 1950 were also used for 1951, as 1951 OASI program data were not available for this publication. The approximated annual total pay roll figure shown in column B was derived by multiplying by 4 the first quarter taxable pay roll figures listed in the joint Census-BOASI publication, County Business Patterns, First Quarter 1950. To maintain comparability with 1951 and 1949 employment estimates, the "all industries" and 2-digit employment totals for 1950 have been adjusted to include employment at plants not in production at any time during the year. Employment at these plants is estimated at 82,000 during 1950. In addition, the 1950 estimates for a few industry groups have been revised for other reasons and, therefore, differ from previously published data. 8 The totals shown for 1947 do not include employment at central administrative offices and auxiliary units. |