been made to the "universe" from which the 

 sample was drawn; a universe which, as 

 mentioned above, embraces only manufactur- 

 ing plants with these characteristics: 



1. At least one establishment 

 with 250 or more employees 

 in first quarter 1953 J 



2. At least 250 employees in 

 early 1956; 



3. That maintained employee 

 food services in early 

 1956. 



The universe to which projections 

 have been made is not necessarily co-ex- 

 tensive with "all manufacturing plants 

 which at present have more than 250 

 employees and have regular food services 

 for employees". The sampling procedure, 

 and information obtained during the 

 survey, would clearly suggest that the 

 universe to which projections have been 

 made — and the projections themselves— to 

 some extent understate the actual situ- 

 ation. However, the precise degree of 

 understatement cannot be measured; and 

 lacking this information, no attempt has 

 been made to "adjust" the survey results 

 to eliminate this source of statistical 

 bias. The reader is nevertheless cautioned 

 that this situation exists. 



COMPOSITION OF THE UNIVERSE TO WHICH PROJECTIONS HAVE BEEN MADE 



Characteristic 



Number plants with 

 food facilities 



Region: 



Northeast 

 North Central 

 South 

 West 



1,720 



2,3U9 



1,U27 



370 



1956 employee size group: 

 250 - U99 

 500 - 999 

 1,000 or more 



United States total 



1,861* 



1,972 

 2,030 



5,866 



31 



INT.DUP. .D.C.60- 75 j7o 



