

moment(e1071)                                R Documentation

_S_t_a_t_i_s_t_i_c_a_l _M_o_m_e_n_t

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

     Computes the (optionally centered and/or absolute)
     moment of order `order'. When `center' and `absolute'
     are both `FALSE', the moment is simply `sum(x ^ order)
     / length(x)'.

_U_s_a_g_e_:

     moment(x, order=1, center=FALSE, absolute=FALSE, na.rm=FALSE)

_A_r_g_u_m_e_n_t_s_:

       x: a numeric vector containing the values whose
          moment is to be computed.

   order: order of the moment to be computed, the default is
          to compute the first moment, i.e., the mean.

  center: a logical value indicating wether centered moments
          are to be computed.

absolute: a logical value indicating wether absolute moments
          are to be computed.

   na.rm: a logical value indicating whether `NA' values
          should be stripped before the computation pro-
          ceeds.

_A_u_t_h_o_r_(_s_)_:

     Kurt Hornik and Friedrich Leisch

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

     `mean', `var'

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

     x <- rnorm(100)

     # Compute mean and variance
     moment(x)
     moment(x, order=2, center=TRUE)

     # Compute the 3rd absolute centered moment
     moment(x, order=3, center=TRUE, absolute=TRUE)

