Sampling Methods for Censuses and Surveys

accuracy accurate adjustment analysis of variance areas Arran Banner average bias calculated cent column complete census counts determined different strata districts effects equal example eye estimates farms growing wheat first-stage units formula frame GENSTAT give given Hertfordshire households included individuals maps material mean square measurements natural units number of farms number of units observations obtained occasion overall parishes percentage standard pilot survey points probability proportional quantitative questionnaire raising factors ratio method regions regression coefficient regression method sample census sampling error sampling methods sampling units second-stage units Section selection size-groups SPSS stage standard deviation standard error statistical stratified sample stratum sub-class sub-sample subroutines suitable sum of squares supplementary information systematic sample taken total number type of sampling unbiased estimate uniform sampling fraction unweighted variable sampling fraction variates weighted mean wheat acreage whole population yield per acre