Full owners— They operate only land owned or land 

 owned plus land operated under a permit, without a 

 permit, or in connection with living quarters furnished by 

 the Government of Guam. 



Part owners— They operate land owned plus land 

 rented from others. They may also operate land under a 

 permit, without a permit, or furnished by the Govern- 

 ment of Guam in connection with their living quarters. 



Tenants— They operate only land rented from others 

 or land rented plus land under a permit, without a permit, 

 or furnished by the Government of Guam in connection 

 with their living quarters. 



Permittees— They operate land under a permit from 

 the Government of Guam, or they may operate some of 

 the land under a permit and the remainder of the land 

 without a permit. 



Nonpermittees— They operate "borrowed" land. They 

 do not own or rent the land, operate the land under a 

 permit, or use the land under any arrangement with the 

 Government of Guam. 



Others — They operate land that does not meet the 

 criteria of the preceding groups. All the land they 

 operate is furnished by the Government of Guam in 

 connection with living quarters, or part is operated 

 without a permit and part is furnished by the Govern- 

 ment of Guam in connection with living quarters. 



Farms by age of operator— Farms were classified by 

 age of operator on the basis of information reported to the 

 enumerator which was entered on the report form. The 

 operator's age was classified into one of the age groups 

 found in table 24. 



Farms by size— Farms were classified by size on the 

 basis of the total land area established in each one. 

 According to the census definition, a farm is essentially an 

 operating unit, not an ownership tract. All land operated or 

 managed by one person or partnership represents one 

 farm. In the case of share-tenants, the land assigned to 

 each share-tenant is considered a separate farm, even 

 though the landlord may consider his/her entire landhold- 

 ing to be one unit rather than several separate units. 



Farms by value of agricultural products sold— Farms 

 were classified on the basis of the total value of agricultural 

 products sold. The total was obtained by adding the 

 reported values of all products sold from the farm. The 

 value of vegetables, field crops, fruits and nuts, nursery 

 and ornamental plants, livestock, milk, poultry, eggs, and 

 fish was obtained from the operator at the time of enumer- 

 ation. These values were classified into one of the groups 

 found in table 26. 



RELIABILITY OF DATA 



All data compiled originated from a complete enumera- 

 tion and, therefore, are not subject to sampling variability. 

 However, the data are subject to nonsampling errors. 

 Nonsampling errors can be attributed to many sources: 

 inability to identify all cases in the actual universe; inability 

 or unwillingness on the part of respondents to provide 

 correct information; definition and classification difficulties; 

 differences in the interpretation of questions; errors in 

 recording or coding the data obtained; and other errors of 

 collection, response, coverage, and estimation for missing 

 or misreported data. 



The accuracy of these tabulated data is determined by 

 the joint effects of the various nonsampling errors. No 

 direct measures of these effects have been obtained; 

 however, precautionary steps were taken in all phases of 

 data collection, processing, and tabulation of the data in an 

 effort to minimize the effects of nonsampling errors. 



1987 CENSUS OF AGRICULTURE 



APPENDIX A A-5 



