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Videos de Conceptos Relacionados

Hindsight Biases01:12

Hindsight Biases

Hindsight bias leads you to believe that the event you just experienced was predictable, even though it really wasn’t. In other words, you knew all along that things would turn out the way they did. Can you relate this to the phrase "Hindsight is 20/20" now?
Margin of Error01:27

Margin of Error

The margin of error is also called the maximum error of an estimate. The margin of error is the maximum possible or expected difference between the observed sample parameter value and the actual population parameter value. For proportion, it is the maximum difference between the value of sample proportion obtained from the data and the true value of population proportion. As the true value of the population parameter is not known, the margin of error is calculated using the sample statistic.
Confidence Coefficient01:24

Confidence Coefficient

The confidence coefficient is also known as the confidence level or degree of confidence. It is the percent expression for the probability, 1-α, that the confidence interval contains the true population parameter assuming that the confidence interval is obtained after sufficient unbiased sampling; for example, if the CL = 90%, then in 90 out of 100 samples the interval estimate will enclose the true population parameter. Here α is the area under the curve, distributed equally under both the...
Conservative Forces01:03

Conservative Forces

Conservative forces are an essential concept in the field of mechanical engineering. Understanding the properties and characteristics of these forces is crucial to the design and analysis of mechanical systems.
Conservative forces are forces that are dependent only on the initial and final positions of an object and that are independent of the path that the object takes between these positions. These forces conserve energy, which means that the work done by the force is independent of the path...
Uncertainty: Overview00:59

Uncertainty: Overview

In analytical chemistry, we often perform repetitive measurements to detect and minimize inaccuracies caused by both determinate and indeterminate errors. Despite the cares we take, the presence of random errors means that repeated measurements almost never have exactly the same magnitude. The collective difference between these measurements - observed values - and the estimated or expected value is called uncertainty. Uncertainty is conventionally written after the estimated or expected value.
Uncertainty: Confidence Intervals00:54

Uncertainty: Confidence Intervals

The confidence interval is the range of values around the mean that contains the true mean. It is expressed as a probability percentage. The interpretation of a 95% confidence interval, for instance, is that the statistician is 95% confident that the true mean falls within the interval. The upper and lower limits of this range are known as confidence limits. The confidence limits for the true mean are estimated from the sample's mean, the standard deviation, and the statistical factor 't,' or...

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Experimental Research Examining How People Can Cope with Uncertainty Through Soft Haptic Sensations
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ELECCIONES 2000: La incertidumbre gana con un deslizamiento de tierras.

D Malakoff

    Science (New York, N.Y.)
    |September 6, 2007
    PubMed
    Resumen

    Los resultados de las elecciones estadounidenses permanecen indecisos, retrasando la claridad sobre la futura política científica y las decisiones presupuestarias. Los investigadores y los grupos de presión se enfrentan a una larga espera para identificar figuras clave en el Congreso y la Administración que influyen en los esfuerzos científicos.

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    Área de la Ciencia:

    • Ciencias Políticas Ciencias Políticas.
    • Ciencia Política Política de la ciencia
    • La Administración Pública es la administración pública.

    Sus antecedentes:

    • Las elecciones presidenciales de Estados Unidos, un evento crucial para la política científica, siguen sin decidirse.
    • Las contiendas por el Senado y la Cámara de Representantes complican aún más el panorama político.
    • La incertidumbre rodea la composición del Congreso y la administración entrante.

    Objetivo del estudio:

    • Para analizar las implicaciones de los resultados de las elecciones retrasadas en la política de la ciencia y la financiación.
    • Identificar el impacto potencial de una elección indecisa en la investigación científica y la promoción.
    • Pronosticar la línea de tiempo para establecer un nuevo liderazgo en las funciones gubernamentales relacionadas con la ciencia.

    Principales métodos:

    • Análisis de datos electorales y modelos de pronóstico político.
    • Revisión de los precedentes históricos para las transiciones de la política científica.
    • Evaluación de las funciones de los comités clave del Congreso y las agencias administrativas.

    Principales resultados:

    • El resultado de las elecciones es el más cercano en una generación, lo que lleva a una incertidumbre prolongada.
    • Todavía no se han determinado las posiciones clave de liderazgo que influyen en la política científica y los presupuestos.
    • Una comprensión definitiva del futuro entorno de la política científica puede tardar meses en surgir.

    Conclusiones:

    • La prolongada incertidumbre de las elecciones estadounidenses plantea desafíos para la comunidad científica.
    • Los investigadores y los grupos de presión deben prepararse para un período potencialmente largo antes de que surja claridad sobre las políticas y el presupuesto.
    • El retraso subraya la interconexión de los resultados políticos y el avance científico.