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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[...]