lathe1                 package:alr3                 R Documentation

_L_a_t_h_e _d_a_t_a

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

     These data are the results of an experiment to study the
     performance of cutting-tool material in cutting steel on a lathe. 
     The two factors are revolution speed and feed rate.  The response
     is tool life in minutes.

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

     This data frame contains the following columns:

     _F_e_e_d Coded feed rate, coded as (actual feed rate -13)/6.  Feed is
          in thousandths of an inch per revolution.

     _S_p_e_e_d Coded speed, coded as (actual speed -900)/300.  Speed is in
          feet per minute.

     _L_i_f_e Life of tool until failure, minutes 

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

     M. R. Delozier

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

     Weisberg, S. (2005). _Applied Linear Regression_, 3rd edition. New
     York: Wiley, Problem 6.3.

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

     data(lathe1)

