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THOMPSON, MICHAEL | Cambridge [REINO UNIDO] : Royal Society of Chemistry | AMC Technical Brief | 2002It is fairly well known that a basic assumption of regression is that the y-values (the dependent- or response variable) are random variables while the x-values (the independent- or predictor variable) should be error-free. This model often prev[...]texto impreso
THOMPSON, MICHAEL | Cambridge [REINO UNIDO] : Royal Society of Chemistry | AMC Technical Brief | 2003Many analytical chemists find the logic of hypothesis tests and confidence intervals hard to follow. What looks like a probability statement about a true concentration is in fact an assertion about random intervals, involving data we did not obs[...]texto impreso
HERNANDEZ, ELISA ; USHER, XIMENA ; BAPTISTA, MARIA BELEN | Montevideo [URUGUAY] : ANII | Indicadores y Estudios, ISSN 1688-5139 | 2009Se recogen los principales resultados de la encuesta, dando continuidad al esfuerzo orientado a impulsar la reflexión sobre las características del proceso de innovación en la industria uruguaya que ha venido realizando desde hace casi una décad[...]texto impreso
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Departamento de Inteligencia Competitiva, lugar donde encontrará todas las publicaciones de comercio exterior y datos económicos. En la página web se encuentran publicaciones periódicas de comercio exterior mensuales y quincenales, informes sect[...]texto impreso
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THOMPSON, MICHAEL | Cambridge [REINO UNIDO] : Royal Society of Chemistry | AMC Technical Brief | 2004While a single z-score provides a valuable indication of the performance of a laboratory, a set or sequence of z-scores provides a deeper insight. Moreover, z-scores collected over time for a single analyte/test material combination provide info[...]texto impreso
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ROYAL SOCIETY OF CHEMISTRY | Cambridge [REINO UNIDO] : Royal Society of Chemistry | AMC Technical Brief | 2001Robust statistics is a convenient modern way of summarising results when we suspect that they include a small proportion of outliers. Most estimates of central tendency (e.g., the arithmetic mean) and dispersion (e.g., standard deviation) depend[...]texto impreso
THOMPSON, MICHAEL | Cambridge [REINO UNIDO] : Royal Society of Chemistry | AMC Technical Brief | 2002There is a simple graphical method for assessing and controlling repeatability precision from a moderate number of duplicated analytical results. The data are obtained from test materials (as opposed to control materials), and the chart differs [...]texto impreso
THOMPSON, MICHAEL | Cambridge [REINO UNIDO] : Royal Society of Chemistry | AMC Technical Brief | 2001Standard errors and confidence intervals for a simple statistic like the mean can be calculated by the use of an algebraic formula derived from familiar assumptions about the data, such as the normal distribution. For a more complex type of stat[...]texto impreso
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Uruguay is one of the regional leaders in several key indicators, such as adult literacy, teledensity, and Internet penetration. It was able to weather the global financial crisis better than most other Latin American countries, and the downturn[...]