APPENDIX D— TECHNIQUE OF THE SURVEY AND 



DIFFERENCES BETWEEN TOTAL PARTICIPANTS 



AND SUBSTANTIAL PARTICIPANTS 



One of the purposes of the second National Survey of Fishing 

 and Hunting was to bring up to date the results of the earlier 

 survey, which was conducted for 1955. Information desired in- 

 cluded- estimates of the number of participants in 1960, the ex- 

 tent of their participation, and their expenditures for fishing 

 and hunting. 



The results relate to persons 12 years of age and older in 

 the December 1960 civilian noninstitutional population of the 

 United States. In addition to the persons covered by the survey, 

 there may be a number of others who usually participate in these 

 activities but did not do so during 1960. Some of these persons 

 may have purchased licenses or equipment during 1960 for use in 

 fishing or hunting. However, such expenditures were not 

 covered since only those who actually fished or hunted during 

 the year were interviewed. 



The survey was conducted for the Bureau of Sport Fisheries 

 and Wildlife by the Bureau of the Census, U.S. Department of 

 Commerce. 



The Sample 



In order to provide as accurate a cross section of the popu- 

 lation as possible, it was decided to relate the sample for 

 the National Survey of Fishing and Hunting to another na- 

 tion-wide survey conducted monthly by the Bureau of the 



Census. As a result, the sample used was a subsample of persons 

 previously selected for the Bureau's Current Population Survey. 

 The sampling plan for the Current Population Survey is de- 

 scribed in Current Population Reports, Series P-23, No. 5, May 1958, 

 issued by the Bureau of the Census. This sample is used 

 each month by the Bureau of the Census to collect the official 

 government statistics on total employment and unemployment. 

 It is an area probability sample distributed over 333 primary 

 sampling units (PSU's), each being a county or group of coun- 

 ties, in total comprising 641 counties and independent cities in 

 the 50 States and the District of Columbia. 



Within each of the 333 sample PSU's, the sample consists of 

 small land areas called segments, each containing approximately 

 six housing units. In determining sample size within each 

 sample PSU, a ratio rather than a fixed quota is employed. The 

 sample is thus self-weighting; that is, each person has the same 

 probability of being selected for the survey. This technique also 

 is self-adjusting for changes in the size and distribution of the 

 population. 



Interviewing 



Approximately 18,000 households containing about 45,000 

 persons 12 years of age and older were included in the sample 

 for the National Survey of Fishing and Hunting. Information 



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