Galaxy                 package:mixAK                 R Documentation

_V_e_l_o_c_i_t_i_e_s _o_f _d_i_s_t_a_n_t _g_a_l_a_x_i_e_s

_D_e_s_c_r_i_p_t_i_o_n:

     Velocities (in km/sec) of 82 distant galaxies, diverging from our
     own galaxy.

     The dataset was first described by Roeder (1990) and subsequently
     analysed under different mixture models by several researchers
     including Escobar and West (1995) and Phillips and Smith (1996).
     Richardson and Green (1997) used a normal mixture estimated using
     reversible jump MCMC to estimate the distribution of the
     velocities.

     *REMARK:* 78th observation is here 26.96 whereas it should be
     26.69 (see 'galaxies'). A value of 26.96 used in Richardson and
     Green (1997) is kept here.

_U_s_a_g_e:

     data(Galaxy)

_F_o_r_m_a_t:

     A numeric vector with observed values.

_S_o_u_r_c_e:

     <URL: http://www.stats.bris.ac.uk/~peter/mixdata>

_R_e_f_e_r_e_n_c_e_s:

     Escobar, M. D. and West, M. (1995). Bayesian density estimation
     and inference using mixtures. _Journal of the American Statistical
     Association_, *90*, 577-588.

     Phillips, D. B. and Smith, A. F. M. (1996). Bayesian model
     comparison via jump diffusions. In _Practical Markov Chain Monte
     Carlo_, eds: W. R. Gilks, S. Richardson, and D. J. Spiegelhalter,
     ch. 13, pp. 215-239. London: Chapman and Hall.

     Richardson, S. and Green, P. J. (1997). On Bayesian analysis of
     mixtures with unknown number of components (with Discussion).
     _Journal of the Royal Statistical Society, Series B_, *59*,
     731-792.

     Roeder, K. (1990). Density estimation with confidence sets
     exemplified by superclusters and voids in the galaxies. _Journal
     of the American Statistical Association_, *85*, 617-624.

_S_e_e _A_l_s_o:

     'galaxies'.

_E_x_a_m_p_l_e_s:

     data(Galaxy)
     summary(Galaxy)

