Cars93 package:MASS R Documentation _D_a_t_a _f_r_o_m _9_3 _C_a_r_s _o_n _S_a_l_e _i_n _t_h_e _U_S_A _i_n _1_9_9_3 _D_e_s_c_r_i_p_t_i_o_n: The 'Cars93' data frame has 93 rows and 27 columns. _U_s_a_g_e: Cars93 _F_o_r_m_a_t: This data frame contains the following columns: '_M_a_n_u_f_a_c_t_u_r_e_r' Manufacturer. '_M_o_d_e_l' Model. '_T_y_p_e' Type: a factor with levels '"Small"', '"Sporty"', '"Compact"', '"Midsize"', '"Large"' and '"Van"'. '_M_i_n._P_r_i_c_e' Minimum Price (in $1,000): price for a basic version. '_P_r_i_c_e' Midrange Price (in $1,000): average of 'Min.Price' and 'Max.Price'. '_M_a_x._P_r_i_c_e' Maximum Price (in $1,000): price for "a premium version". '_M_P_G._c_i_t_y' City MPG (miles per US gallon by EPA rating). '_M_P_G._h_i_g_h_w_a_y' Highway MPG. '_A_i_r_B_a_g_s' Air Bags standard. Factor: none, driver only, or driver & passenger. '_D_r_i_v_e_T_r_a_i_n' Drive train type: rear wheel, front wheel or 4WD; (factor). '_C_y_l_i_n_d_e_r_s' Number of cylinders (missing for Mazda RX-7, which has a rotary engine). '_E_n_g_i_n_e_S_i_z_e' Engine size (litres). '_H_o_r_s_e_p_o_w_e_r' Horsepower (maximum). '_R_P_M' RPM (revs per minute at maximum horsepower). '_R_e_v._p_e_r._m_i_l_e' Engine revolutions per mile (in highest gear). '_M_a_n._t_r_a_n_s._a_v_a_i_l' Is a manual transmission version available? (yes or no, Factor). '_F_u_e_l._t_a_n_k._c_a_p_a_c_i_t_y' Fuel tank capacity (US gallons). '_P_a_s_s_e_n_g_e_r_s' Passenger capacity (persons) '_L_e_n_g_t_h' Length (inches). '_W_h_e_e_l_b_a_s_e' Wheelbase (inches). '_W_i_d_t_h' Width (inches). '_T_u_r_n._c_i_r_c_l_e' U-turn space (feet). '_R_e_a_r._s_e_a_t._r_o_o_m' Rear seat room (inches) (missing for 2-seater vehicles). '_L_u_g_g_a_g_e._r_o_o_m' Luggage capacity (cubic feet) (missing for vans). '_W_e_i_g_h_t' Weight (pounds). '_O_r_i_g_i_n' Of non-USA or USA company origins? (factor). '_M_a_k_e' Combination of Manufacturer and Model (character). _D_e_t_a_i_l_s: Cars were selected at random from among 1993 passenger car models that were listed in both the _Consumer Reports_ issue and the _PACE Buying Guide_. Pickup trucks and Sport/Utility vehicles were eliminated due to incomplete information in the _Consumer Reports_ source. Duplicate models (e.g., Dodge Shadow and Plymouth Sundance) were listed at most once. Further description can be found in Lock (1993). _S_o_u_r_c_e: Lock, R. H. (1993) 1993 New Car Data. _Journal of Statistics Education_ *1*(1). . _R_e_f_e_r_e_n_c_e_s: Venables, W. N. and Ripley, B. D. (1999) _Modern Applied Statistics with S-PLUS._ Third Edition. Springer.