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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Bias Correction in Estimation of the Population Correlation Coefficient) ผู้เขียน: จุฑาภรณ์ สินสมบูรณ์ทอง สื่อสิ่งพิมพ์:pdf AbstractAn estimator of the population correlation coefficient of two variables for a bivariate normal distribution was proposed and evaluated using comparisons with the Pearson correlation coefficient and an estimator of Olkin and Pratt, conducted using a simulation study. It was found that for a small sample size of n=10, the absolute bias of the proposed estimator was less than those of the Pearson correlation coefficient and an estimator of Olkin and Pratt. In addition, the mean square errors of those estimators seemed to have no difference in each situation for this study. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Estimation of the Correlation Coefficient for a Bivariate Normal Distribution with Missing Data) ผู้เขียน:จุฑาภรณ์ สินสมบูรณ์ทอง สื่อสิ่งพิมพ์:pdf AbstractThis study proposes an estimator of the correlation coefficient for a bivariate normal distribution with missing data, via the complete observation analysis method. Evaluation of the proposed estimator (?? J) in comparison with the Pearson correlation coefficient (??P ) was conducted using a simulation study. It was found that, for a higher percentage of missing data in a large sample size, the absolute bias of ?? J was less than that of ?? P when the population correlation coefficients (?) were not close to zero. In addition, the mean square error of ??J was not different from that of ??P in each situation. |
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ผลงานตีพิมพ์ในวารสารวิชาการThe effect of phenology on the carbon exchange process in grassland and maize cropland ecosystems across a semiarid area of Chinaผู้แต่ง:Du, Q., Liu, H., Li, Y., Xu, L.,  Dr.Sapit Diloksumpun, Associate Professor , วารสาร:  
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ผลงานตีพิมพ์ในวารสารวิชาการDetection and quantification of the selective EP4 receptor antagonist CJ-023423 (grapiprant) in canine plasma by HPLC with spectrofluorimetric detectionผู้แต่ง:De Vito, V., Saba, A., Lee, H.-K., Owen, H., Dr.Amnart Poapolathep, Associate Professor , Giorgi, M., วารสาร: |
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