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Examination of Influential Observations to Improve Discriminant Analysis |
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| Authors: | Elizabeth Lesquoy Richard Tomassone |
| Institution: | Université de Paris-Sud and Institut National Agronomique |
| Abstract: | Three simple transformations are proposed in the context of ratio and product methods of estimation, based on any probability sampling design, and the usual unbiased estimation under varying probability sampling. These transformations may be effected after the data are collected in a survey. The objective is to obtain improved estimators of the population total |
| Keywords: | Bias mean squared error product method: ratio method regression method: simple random sampling systematic sampling varying probability sampling |