Abstract
The objective of the research is to find the best method to estimate rice crop through out evaluating the applied methods of stratified random sampling .By using different sorts of sampling estimators, a comparison was held among the variances of the mean for simple random sampling, stratified random sampling(var()) and separate regression estimator. The results indicate that the separate regression estimator give best estimations. The approximate cum.f4/5 method was used to determine the optimum stratum boundaries, new strata was put and then var () was calculated .In comparison with strata used nowadays in central statistical organization, the new strata led to obvious decrease in the variance. The stratified mean was estimated using the separate regression method for rice crop and comparing it with the population real estimate by testing χ2 between the real and estimate value .
DOI
10.33095/jeas.v15i55.1362
Subject Area
Statistical
First Page
183
Last Page
195
Rights
http://creativecommons.org/licenses/by-nc-nd/4.0
Recommended Citation
Alwan, I. M. (2009). A Statistical Study on Estimation of the Cultivated Area 0F the Rice Crop in Najaf Governorate. Journal of Economics and Administrative Sciences, 15(55), 183-195. https://doi.org/10.33095/jeas.v15i55.1362
