B. Questionnaire Design 



The Bureau of Connmercial Fisheries supplied Crossley, S-D 

 Surveys, Inc. with a detailed list of specific objectives from 

 which a first draft of the questionnaire was designed. This 

 draft was presented to various processors for their opinions 

 and connments, many of which were incorporated in a second 

 draft. The revised version was then pretested with 57 estab- 

 lishments in Pittsburgh and Toledo. As a result of the test, 

 minor changes were made in the wording of several questions 

 ajid the sequence was altered to maximize interviewing effi- 

 ciency. 



A copy of the final version of the questionnaire is included at 

 the end of this circular. 



C. Sample Design 



For the Frozen Processed Fish and Shellfish Study, there 

 were selected ten separate probability sampler., each one to 

 represent the public and institutional, nonmilitary, eating 

 places serving hot, solid food for consumption on the premises 

 within the corporate limits of each one of ten cities designated 

 by the Department of the Interior. 



Each of the probability samples, except the one for Springfield, 

 Massachusetts, was selected both fronn a list of establishments 

 of the types described above and from clusters of areas within 

 each city. In Springfield, Massachusetts, an area probability 

 sample only was used. Wherever both list probability and area 

 probability samples were selected, no sampling unit had a 

 double opportunity of being selected because, in effect, all 

 eating places appearing on the lists were eliminated from the 

 universe being sampled through the area clusters. The samp- 

 ling fraction for each type of eating place was the same, 

 whether it was sampled from the list or from the area coverage. 



With respect to the area sampling, it was necessary to divide 

 each city into sampling units (areas made up of clusters of 

 adjacent blocks) expected to contain almost equal numbers of 

 establishments serving hot solid food eind belonging to the first 

 subuniverse (restaurants, hotels, bars, etc.). This was done 



