hirose package:boot R Documentation _F_a_i_l_u_r_e _T_i_m_e _o_f _P_E_T _F_i_l_m _D_e_s_c_r_i_p_t_i_o_n: The 'hirose' data frame has 44 rows and 3 columns. PET film is used in electrical insulation. In this accelerated life test the failure times for 44 samples in gas insulated transformers. 4 different voltage levels were used. _U_s_a_g_e: hirose _F_o_r_m_a_t: This data frame contains the following columns: '_v_o_l_t' The voltage (in kV). '_t_i_m_e' The failure or censoring time in hours. '_c_e_n_s' The censoring indicator; '1' means right-censored data. _S_o_u_r_c_e: The data were obtained from Hirose, H. (1993) Estimation of threshold stress in accelerated life-testing. _IEEE Transactions on Reliability_, *42*, 650-657. _R_e_f_e_r_e_n_c_e_s: Davison, A.C. and Hinkley, D.V. (1997) _Bootstrap Methods and Their Application_. Cambridge University Press.