EAST NORTH CENTRAL STATES, BY MAJOR INDUSTRY GROUPS: 1950, 1949, AND 1947

would be disclosed for individual companies in any year, (b) survey estimates are inconsistent with other
(columns A and G) or "Value added by manufacture" (columns F and J) exceeds 15 percent. Standard errors
industry are usually of the same general magnitude as the standard errors shown for employment and
errors considerably in excess of 15 percent.)

value

withheld because the estimate did not meet publication standards, either on the basis of the associated standard error of estimate or on the basis of consistency review.

1The averages for 1950 and 1949 are based on employment reported for the four pay periods ending nearest the 15th of March, May, August, and November. The figures do not include employees reported separately at central administrative offices and auxiliary establishments. The 1949 number of such employees in each State of this Geographic Division is shown below. The approximated 1949 annual total pay roll shown was derived by multiplying by four the first quarter 1949 taxable pay roll figures listed in the joint Census-BOASI publication, "County Business Patterns." OASI program data for 1950 were not available for this publication.

EAST NORTH CENTRAL STATES, BY MAJOR INDUSTRY GROUPS: 1950, 1949, AND 1947--Continued

2Value of products less cost of materials, supplies, fuel, electric energy, and contract work.

3The percentage standard errors shown in this column indicate the difference 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 (iii) Three times the percentage shown: almost always

"The Annual Survey estimates for industry group 24, "Lumber and wood products, except furniture," tend to be understated because of incomplete coverage of logging camps and logging contractors not operating sawmills (Standard Industrial Classification Industry 2411). This undercoverage is estimated at less than 5 percent.

"The 1950 and 1949 figures for major group 24 are not strictly comparable with 1947 data. In 1947 only sawmills that produced more than 200,000 board feet of lumber were required to report the information shown in this table, whereas in 1950 and 1949 it was requested of all sawmills. It is estimated that all mills in the United States producing less than 200,000 board feet account for approximately 3 percent of total employment for major group 24. No estimate has been made of the importance of these small mills for individual States or Geographic Divisions.