Practical Statistics for Astronomers ( Cambridge Observing Handbooks for Research Astronomers )

Publication series :Cambridge Observing Handbooks for Research Astronomers

Author: J. V. Wall; C. R. Jenkins  

Publisher: Cambridge University Press‎

Publication year: 2012

E-ISBN: 9781139368247

P-ISBN(Paperback): 9780521732499

Subject: P1 Astronomy

Keyword: 天文学

Language: ENG

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Practical Statistics for Astronomers

Description

Astronomy needs statistical methods to interpret data, but statistics is a many-faceted subject that is difficult for non-specialists to access. This handbook helps astronomers analyze the complex data and models of modern astronomy. This second edition has been revised to feature many more examples using Monte Carlo simulations, and now also includes Bayesian inference, Bayes factors and Markov chain Monte Carlo integration. Chapters cover basic probability, correlation analysis, hypothesis testing, Bayesian modelling, time series analysis, luminosity functions and clustering. Exercises at the end of each chapter guide readers through the techniques and tests necessary for most observational investigations. The data tables, solutions to problems, and other resources are available online at www.cambridge.org/9780521732499. Bringing together the most relevant statistical and probabilistic techniques for use in observational astronomy, this handbook is a practical manual for advanced undergraduate and graduate students and professional astronomers.

Chapter

1.5 How to use this book

Exercises

2 Probability

2.1 What is probability?

2.2 Conditionality and independence

2.3 ... and Bayes' theorem

2.4 Probability distributions

2.4.1 Concept

2.4.2 Some common distributions

2.5 Bayesian inferences with probability

2.6 Monte Carlo generators

Exercises

3 Statistics and expectations

3.1 Statistics

3.2 What should we expect of our statistics?

3.3 Simple error analysis

3.3.1 Random or systematic?

3.3.2 Error propagation

3.3.3 Combining distributions

3.4 Some useful statistics, and their distributions

3.5 Uses of statistics

Exercises

4 Correlation and association

4.1 The fishing trip

4.2 Testing for correlation

4.2.1 Bayesian correlation-testing

4.2.2 The classical approach to correlation-testing

4.2.3 Correlation-testing: classical, non-parametric

4.2.4 Correlation-testing: Bayesian versus non-Bayesian tests

4.3 Partial correlation

4.4 But what next?

4.5 Principal component analysis

Exercises

5 Hypothesis testing

5.1 Methodology of classical hypothesis testing

5.2 Parametric tests: means and variances, t and F tests

5.2.1 The Behrens–Fisher Test

5.2.2 Non-Gaussian parametric testing

5.2.3 Which model is better? The Bayes factor

5.3 Non-parametric tests: single samples

5.3.1 Chi-square test

5.3.2 Kolmogorov–Smirnov one-sample test

5.3.3 One-sample runs test of randomness

5.4 Non-parametric tests: two independent samples

5.4.1 Fisher exact test

5.4.2 Chi-square two-sample (or k-sample) test

5.4.3 Wilcoxon–Mann–Whitney U test

5.4.4 Kolmogorov–Smirnov two-sample test

5.5 Summary, one- and two-sample non-parametric tests

5.6 Statistical ritual

Exercises

6 Data modelling and parameter estimation: basics

6.1 The maximum-likelihood method

6.2 The method of least squares: regression analysis

6.3 The minimum chi-square method

6.4 Weighting combinations of data

6.5 Bayesian likelihood analysis

6.6 Bootstrap and jackknife

Exercises

7 Data modelling and parameter estimation: advanced topics

7.1 Model choice and Bayesian evidence

7.2 Model simplicity and the Ockham factor

7.3 The integration problem

7.4 Pitfalls in model choice

7.5 The Akaike and Bayesian information criteria

7.6 Monte Carlo integration: doing the Bayesian integrals

7.7 The Metropolis–Hastings algorithm

7.8 Computation of the evidence by MCMC

7.9 Models of models, and the combination of data sets

7.10 Broadening the range of models, and weights

7.11 Press and Kochanek's method

7.12 Median statistics

Exercises

8 Detection and surveys

8.1 Detection

8.2 Catalogues and selection effects

8.3 Luminosity functions

8.3.1 Luminosity functions via the Vmax method

8.3.2 Luminosity functions via maximum likelihood; the SOS method

8.3.3 Luminosity functions via source counts and redshift distributions

8.4 Tests on luminosity functions

8.4.1 Error propagation

8.4.2 Luminosity-function comparison

8.4.3 Correlation: multivariate luminosity functions

8.5 Survival analysis

8.5.1 The normalized luminosity function

8.5.2 Modelling and parameter estimation

8.5.3 Hypothesis testing

8.5.4 Testing for correlation or statistical independence

8.6 The confusion limit

Exercises

9 Sequential data – 1D statistics

9.1 Data transformations, Karhunen–Loeve transform, and others

9.2 Fourier analysis

9.2.1 The fast Fourier transform

9.2.2 Statistical properties of Fourier transforms

9.3 Filtering

9.3.1 Low-pass filters

9.3.2 High-pass filters

9.3.3 An integrated approach

9.4 Correlating

9.4.1 Redshifts by correlation

9.4.2 The coherence function

9.4.3 The correlator

9.5 Unevenly sampled data

9.5.1 The periodogram

9.5.2 Times of arrival

9.6 Wavelets

9.7 Detection difficulties: 1/f noise

Exercises

10 Statistics of large-scale structure

10.1 Statistics on a spherical surface

10.2 Sky representation: projection and contouring

10.3 The sky distribution

10.4 Two-point angular correlation function

10.4.1 Estimators and errors

10.4.2 Integral constraint

10.4.3 Instrumental effects

10.5 Counts in cells

10.5.1 Counts-in-cells moments

10.5.2 Measuring counts-in-cells

10.5.3 Instrumental effects

10.6 The angular power spectrum

10.6.1 Formalism for cl

10.6.2 Instrumental effects

10.7 Galaxy distribution statistics: interpretation

Exercises

11 Epilogue: statistics and our Universe

11.1 The galaxy universe

11.2 The weak lensing universe

11.3 The cosmic microwave background universe

Appendix A: The literature

Appendix B: Statistical tables

References

Index

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