Search results for "Bootstrap confidence intervals"

showing 3 items of 3 documents

Modelling the dynamics of the students’ academic performance in the German region of the North Rhine-Westphalia: an epidemiological approach with unc…

2013

Student academic underachievement is a concern of paramount importance in Europe, where around 15% of the students in the last high school courses do not achieve the minimum knowledge academic requirement. In this paper, we propose a model based on a system of differential equations to study the dynamics of the students academic performance in the German region of North Rhine-Westphalia. This approach is supported by the idea that both, good and bad study habits, are a mixture of personal decisions and influence of classmates. This model allows us to forecast the student academic performance by means of confidence intervals over the next few years.

Applied MathematicsForecasting in Social SciencesNon-linear System of Differential EquationsModellingConfidence intervallanguage.human_languageComputer Science ApplicationsGermanBootstrap Confidence Intervals.Computational Theory and MathematicsSystem of differential equationsDynamics (music)ComputingMilieux_COMPUTERSANDEDUCATIONMathematics educationlanguageStudent Academic PerformanceBootstrap confidence intervalMATEMATICA APLICADAMathematicsInternational Journal of Computer Mathematics
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Modelling and forecasting mortality in Spain

2008

[EN] Experience shows that static life tables overestimate death probabilities. As a consequence of this overestimation the premiums for annuities, pensions and life insurance are not what they actually should be, with negative effects for insurance companies or policy-holders. The reason for this overestimation is that static life tables, through being computed for a specific period of time, cannot take into account the decreasing mortality trend over time. Dynamic life tables overcome this problem by incorporating the influence of the calendar when graduating mortality. Recent papers on the topic look for the development of new methods to deal with this dynamism. Most methods used in dyna…

Information Systems and ManagementLee–CarterGeneral Computer ScienceESTADISTICA E INVESTIGACION OPERATIVAManagement Science and Operations ResearchLee carterIndustrial and Manufacturing EngineeringDynamic life tablesMortality dataModeling and SimulationLife insuranceEconomicsEconometricsStatistical analysisDynamismBootstrap confidence intervalParametric statisticsForecastingBootstrap confidence intervals
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A geostatistical approach for dynamic life tables: The effect of mortality on remaining lifetime and annuities

2010

Dynamic life tables arise as an alternative to the standard (static) life table, with the aim of incorporating the evolution of mortality over time. The parametric model introduced by Lee and Carter in 1992 for projected mortality rates in the US is one of the most outstanding and has been used a great deal since then. Different versions of the model have been developed but all of them, together with other parametric models, consider the observed mortality rates as independent observations. This is a difficult hypothesis to justify when looking at the graph of the residuals obtained with any of these methods. Methods of adjustment and prediction based on geostatistical techniques which expl…

Statistics and ProbabilityLife tableEconomics and EconometricsESTADISTICA E INVESTIGACION OPERATIVAStructure (category theory)Variation (game tree)GeostatisticsTable (information)GridParametric modelStatisticsEconometricsGraph (abstract data type)GeostatisticsStatistics Probability and UncertaintyBootstrap confidence intervalMathematicsBootstrap confidence intervals
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