昭和23年度, 稲, 甘藷作付面積調査計畫

概要

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The plan of survey. The purpose of the present sample survey is to determine the correct planted area of each crop through the following procedure, i, e. estimating the omitted area and adjusting the erroneous reports in respect to paddy, up land rice and sweet potato planted area. The "Koaza" is to be selected as the primary sampling unit. The parcel number, class and area of the whole cultivated land within the sampled area are entered into the schedule of the survey according to the land ledger and the names of the tillers are entered according to the land ledge or the land ledge repared by the Agricultural Land commission. The formula to estimate the total Panted area of paddy rice is $ X^{\ast} = \frac{{\sum^{R}{\frac{M_i}{m_i}}}{\sum^{m_i}{\frac{N_{ij}}{n_{ij}}}}{\sum^{m_j}{X_{ijk}}}} {{\sum^{R}{\frac{M_i}{m_i}}}{\sum^{m_i}{\frac{N_{ij}}{n_{ij}}}}{\sum^{m_j}{Y_{ijk}}}} \times y + \sum^{R}{\frac{M_i}{m_i}}\sum^{m}{Z_{ij}} $ where $ Y_{ijk} $ is a reported acreage of $ k $-th cultivated land which belongs to $ i $-stratum, $ j $-th primary unit. $ X_{ijk} $ is an actually measured acreage. $ Z_{ij} $ is a total acreage of cultivated land in $ i $-th stratum, $ j $-th primary unit planted with paddy rice for which report is wanting. $ y $ is the total reported planted acreage of paddy rice.
統計科学研究会,Research Association of Statistical Sciencesの論文
1949-09-30