coking                 package:ISwR                 R Documentation

_C_o_k_i_n_g _d_a_t_a

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

     The 'coking' data frame has 18 rows and 3 columns. It contains the
     time to coking in an experiment where the oven width and
     temperature were varied.

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

     coking

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

     This data frame contains the following columns:

     '_w_i_d_t_h' a factor with levels '4', '8', and '12', giving the oven
          width in inches.

     '_t_e_m_p' a factor with levels '1600' and '1900', giving the
          temperature in Fahrenheit.

     '_t_i_m_e' a numeric vector, time to coking.

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

     R.A. Johnson (1994), _Miller and Freund's Probability and
     Statistics for Engineers_, 5th ed., Prentice-Hall.

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

     attach(coking)
     matplot(tapply(time,list(width,temp),mean))
     detach(coking)

