_S_a_m_p_l_e _Q_u_a_n_t_i_l_e_s
	
	     quantile(x, probs=seq(0, 1, 0.25), na.rm=FALSE)
	
	_D_e_s_c_r_i_p_t_i_o_n:
	
	     quantile produces sample quantiles corresponding to the
	     given probabilities.  The smallest observation
	     corresponds to a probability of 0 and the largest to a
	     probability of 1.