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2015 | OriginalPaper | Chapter

2. A Bit of Theory

Authors : Stefano Andreon, Brian Weaver

Published in: Bayesian Methods for the Physical Sciences

Publisher: Springer International Publishing

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Abstract

This short chapter introduces the basics of probability theory in an intuitive fashion using simple examples. It also illustrates, again with examples, how to propagate errors and the difference between marginal and profile likelihoods.

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Footnotes
1
The notation p(y | x) reads “probability of y given x.” See Appendix B.2 for the mathematical definition of conditional probability.
 
2
Some of the material of this section has been drawn from Andreon and Hurn (2010).
 
3
While the example is real, we have idealized it in several aspects.
 
4
This is one of the very few analytic computation of this book. Later on, a computer will be charged with the burden of performing the computations. Why else call it computer?
 
5
This section can be skipped the first time through.
 
Literature
go back to reference S. Andreon and M.A. Hurn. The scaling relation between richness and mass of galaxy clusters: a Bayesian approach. Monthly Notices of the Royal Astronomical Society, 404(4):1922–1937, 2010. S. Andreon and M.A. Hurn. The scaling relation between richness and mass of galaxy clusters: a Bayesian approach. Monthly Notices of the Royal Astronomical Society, 404(4):1922–1937, 2010.
go back to reference S. Andreon, B. Maughan, G. Trinchieri, and J. Kurk. JKCS 041: a colour-detected galaxy cluster at z phot  ∼ 1. 9 with deep potential well as confirmed by X-ray data. Astronomy & Astrophysics, 507:147–157, 2009. S. Andreon, B. Maughan, G. Trinchieri, and J. Kurk. JKCS 041: a colour-detected galaxy cluster at z phot  ∼ 1. 9 with deep potential well as confirmed by X-ray data. Astronomy & Astrophysics, 507:147–157, 2009.
go back to reference K.B. Athreya and S.N. Lahiri. Measure theory and probability theory. Springer-Verlag New York Inc, 2006. K.B. Athreya and S.N. Lahiri. Measure theory and probability theory. Springer-Verlag New York Inc, 2006.
go back to reference Y. Avni. Energy spectra of X-ray clusters of galaxies. The Astrophysical Journal, 210:642–646, 1976.CrossRef Y. Avni. Energy spectra of X-ray clusters of galaxies. The Astrophysical Journal, 210:642–646, 1976.CrossRef
go back to reference G. Casella and R.L. Berger. Statistical Inference. Duxbury Press, 2001. G. Casella and R.L. Berger. Statistical Inference. Duxbury Press, 2001.
go back to reference W.H. Press, S.A. Teukolsky, W.T. Vetterling, and B.P. Flannery. Numerical Recipes. Cambridge University Press, Cambridge, third edition, 2007.MATH W.H. Press, S.A. Teukolsky, W.T. Vetterling, and B.P. Flannery. Numerical Recipes. Cambridge University Press, Cambridge, third edition, 2007.MATH
Metadata
Title
A Bit of Theory
Authors
Stefano Andreon
Brian Weaver
Copyright Year
2015
DOI
https://doi.org/10.1007/978-3-319-15287-5_2

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