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). <URL:
     http://www.amstat.org/publications/jse/v1n1/datasets.lock.html>.

_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.

