asteroid_dens


This data set gives measured values for the physical density (in grams/cm^3) of 26 asteroids in the main Asteroid Belt of our Solar System, along with their measurement errors.   This dataset is useful for analysis involving heteroscedastic measurement errors in 1-dimension, such as weighted density estimation and regression.  Further description and references for the dataset are given in  Appendix C.1 of Feigelson & Babu (2012).   


datasets

A collection of 19 datasets from contemporary astronomical research.  They are described the textbook `Modern Statistical Methods for Astronomy with R Applications' by Eric D. Feigelson and G. Jogesh Babu (Cambridge University Press, 2012, Appendix C) or on the website of Penn State's Center for Astrostatistics (http://astrostatistics.psu.edu/datasets).  These datasets can be used to exercise methodology involving: density estimation; heteroscedastic measurement errors; contingency tables; two-sample hypothesis tests; spatial point processes; nonlinear regression; mixture models; censoring and truncation; multivariate analysis; classification and clustering; inhomogeneous Poisson processes; periodic and stochastic time series analysis.

asteroid_dens: Densities of asteroids

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