The effects of data input errors on subsequent statistical inference |
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| Authors: | Marcin Kozak Wojtek Krzanowski Izabela Cichocka James Hartley |
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| Affiliation: | 1. Department of Botany, Warsaw University of Life Sciences – SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland;2. Department of Quantitative Methods in Economics, Faculty of Economics, University of Information Technology and Management in Rzeszow, Sucharskiego 2, 35-225 Rzeszów, Poland;3. College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, UK;4. Department of Quantitative Methods in Economics, Faculty of Economics, University of Information Technology and Management in Rzeszow, Sucharskiego 2, 35-225 Rzeszów, Poland;5. School of Psychology, Keele University, Staffordshire ST5 5BG, UK |
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| Abstract: | Data input errors can potentially affect statistical inferences, but little research has been published to date on this topic. In the present paper, we report the effect of data input errors on the statistical inferences drawn about population parameters in an empirical study involving 280 students from two Polish universities, namely the Warsaw University of Life Sciences – SGGW and the University of Information Technology and Management in Rzeszow. We found that 28% of the students committed at least one data error. While some of these errors were small and did not have any real effect, a few of them had substantial effects on the statistical inferences drawn about the population parameters. |
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| Keywords: | correlation numerical data entry statistical inference typing errors |
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