Probability

  • A cartoon to be used for in discussing the Poisson model for the number of rare events in a fixed amount of time. The cartoon was used in the August 2018 CAUSE Cartoon Caption Contest. This caption received an honorable mention. The drawing was created by British cartoonist John Landers based on an idea from Dennis Pearl of Penn State University. The winning caption  in the August competition was "Always read the full informed consent document before signing up to be in a matched-pairs experiment," written by Greg Snow from Brigham Young University and may be found at https://www.causeweb.org/cause/resources/fun/cartoons/twins

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  • A joke to help in discussing the Geometric and Hypergeometric probability distributions.  A version of the joke was submitted to AmStat News by Sara Venkatraman, a student at Cornell University and appeared in the October, 2018 issue.  The joke was modified to relate the hypergeometric distribution to sampling without replacement by the CAUSEweb fun collection editors (Dennis Peaaerl and Larry Lesser).

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  • A song about the Problem of Points, whose discussion in the 17th century led to the foundations of probability theory and expected value.  The lyric was written in 2017 by Lawrence M Lesser from The University of Texas at El Paso and may be sung to the tune of the Sting #1 1983 Grammy-winning hit “Every Breath You Take”.  The audio recording was produced by Nicolas Acedo with vocals by Alejandra Nunez Vargas, both students in the Commercial Music Program at The University of Texas at El Paso.

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  • Probabilistic Risk Assessment (PRA) is a comprehensive, structured, and logical analysis method aimed at identifying and assessing risks in complex technological systems for the purpose of cost-effectively improving their safety and performance. NASA’s objective is to better understand and effectively manage risk, and thus more effectively ensure mission and programmatic success, and to achieve and maintain high safety standards at NASA. This PRA Procedures Guide, in the present second edition, is neither a textbook nor an exhaustive sourcebook of PRA methods and techniques. It provides a set of recommended procedures, based on the experience of the authors, that are applicable to different levels and types of PRA that are performed for aerospace applications. 

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  • This NASA-HANDBOOK is published by the National Aeronautics and Space Administration (NASA) to provide a Bayesian foundation for framing probabilistic problems and performing inference on these problems. It is aimed at scientists and engineers and provides an analytical structure for combining data and information from various sources to generate estimates of the parameters of uncertainty distributions used in risk and reliability models. The overall approach taken in this document is to give both a broad perspective on data analysis issues and a narrow focus on the methods required to implement a comprehensive database repository.

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  • This presentation was given by Aneta Siemiginowska at the 4th International X-ray Astronomy School (2005), held at the Harvard-Smithsonian Center for Astrophysics in Cambridge, MA.  

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  • This resource was prepared to give the practicing engineer a clear understanding of probability and statistics with special consideration to problems frequently encountered in aerospace engineering. It is conceived to be both a desktop reference and a refresher for aerospace engineers in government and industry. It could also be used as a supplement to standard texts for in-house training courses on the subject. 

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  • These pages explain the following basic statistics concepts: mean, median, mode, variance, standard deviation and correlation coefficient (with example from the Institute on Climate and Planets).

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  • Our online calculators and converters can help you in many daily tasks that require calculations to complete.

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  • Free statistical calculators online.  Our basic statistical calculators will help you in common tasks you might encounter and deal mostly with simple distributions. 

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