WaferTypes             package:SASmixed             R Documentation

_D_a_t_a _o_n _d_i_f_f_e_r_e_n_t _t_y_p_e_s _o_f _s_i_l_i_c_o_n _w_a_f_e_r_s

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

     The 'WaferTypes' data frame has 144 rows and 8 columns.

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

     This data frame contains the following columns:

     _G_r_o_u_p a factor with levels '1' to '4'

     _T_e_m_p_e_r_a_t_u_r_e an ordered factor with levels '900' < '1000' < '1100'

     _T_y_p_e a factor with levels 'A' and 'B' 

     _W_a_f_e_r a numeric vector

     _S_i_t_e a numeric vector

     _d_e_l_t_a a numeric vector

     _T_h_i_c_k a numeric vector

     _u_W_a_f_e_r an ordered factor giving a unique code to each group,
          temperature, type and wafer combination.

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

     Littel, R. C., Milliken, G. A., Stroup, W. W., and Wolfinger, R.
     D. (1996), _SAS System for Mixed Models_, SAS Institute (Data Set
     5.8).

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

     str(WaferTypes)

