B.3 Car Data

The car data set (Chambers et al.; 1983) consists of 13 variables measured for 74 car types. The abbreviations in Table B.3 are as follows:

$X_{1}$:	P	Price,
$X_{2}$:	M	Mileage (in miles per gallone),
$X_{3}$:	R78	Repair record 1978 (rated on a 5-point scale; 5 best, 1 worst),
$X_{4}$:	R77	Repair record 1977 (scale as before),
$X_{5}$:	H	Headroom (in inches),
$X_{6}$:	R	Rear seat clearance (distance from front seat back to rear seat, in inches),
$X_{7}$:	Tr	Trunk space (in cubic feet),
$X_{8}$:	W	Weight (in pound),
$X_{9}$:	L	Length (in inches),
$X_{10}$:	T	Turning diameter (clearance required to make a U-turn, in feet),
$X_{11}$:	D	Displacement (in cubic inches),
$X_{12}$:	G	Gear ratio for high gear,
$X_{13}$:	C	Company headquarter (1 for U.S., 2 for Japan, 3 for Europe).

Model	P	M	R78	R77	H	R	Tr	W	L	T	D	G	C
AMC-Concord	4099	22	3	2	2.5	27.5	11	2930	186	40	121	3.58	1
AMC-Pacer	4749	17	3	1	3.0	25.5	11	3350	173	40	258	2.53	1
AMC-Spirit	3799	22	-	-	3.0	18.5	12	2640	168	35	121	3.08	1
Audi-5000	9690	17	5	2	3.0	27.0	15	2830	189	37	131	3.20	1
Audi-Fox	6295	23	3	3	2.5	28.0	11	2070	174	36	97	3.70	3
BMW-320i	9735	25	4	4	2.5	26.0	12	2650	177	34	121	3.64	3
Buick-Century	4816	20	3	3	4.5	29.0	16	3250	196	40	196	2.93	1
Buick-Electra	7827	15	4	4	4.0	31.5	20	4080	222	43	350	2.41	1
Buick-Le-Sabre	5788	18	3	4	4.0	30.5	21	3670	218	43	231	2.73	1
Buick-Opel	4453	26	-	-	3.0	24.0	10	2230	170	34	304	2.87	1
Buick-Regal	5189	20	3	3	2.0	28.5	16	3280	200	42	196	2.93	1
Buick-Riviera	10372	16	3	4	3.5	30.0	17	3880	207	43	231	2.93	1
Buick-Skylark	4082	19	3	3	3.5	27.0	13	3400	200	42	231	3.08	1
Cad.-Deville	11385	14	3	3	4.0	31.5	20	4330	221	44	425	2.28	1
Cad.-Eldorado	14500	14	2	2	3.5	30.0	16	3900	204	43	350	2.19	1
Cad.-Seville	15906	21	3	3	3.0	30.0	13	4290	204	45	350	2.24	1
Chev.-Chevette	3299	29	3	3	2.5	26.0	9	2110	163	34	231	2.93	1
Chev.-Impala	5705	16	4	4	4.0	29.5	20	3690	212	43	250	2.56	1
Chev.-Malibu	4504	22	3	3	3.5	28.5	17	3180	193	41	200	2.73	1
Chev.-Monte-Carlo	5104	22	2	3	2.0	28.5	16	3220	200	41	200	2.73	1
Chev.-Monza	3667	24	2	2	2.0	25.0	7	2750	179	40	151	2.73	1
Chev.-Nova	3955	19	3	3	3.5	27.0	13	3430	197	43	250	2.56	1
Datsun-200-SX	6229	23	4	3	1.5	21.0	6	2370	170	35	119	3.89	2
Datsun-210	4589	35	5	5	2.0	23.5	8	2020	165	32	85	3.70	2
Datsun-510	5079	24	4	4	2.5	22.0	8	2280	170	34	119	3.54	2
Datsun-810	8129	21	4	4	2.5	27.0	8	2750	184	38	146	3.55	2
Dodge-Colt	3984	30	5	4	2.0	24.0	8	2120	163	35	98	3.54	2
Dodge-Diplomat	5010	18	2	2	4.0	29.0	17	3600	206	46	318	2.47	1
Dodge-Magnum-XE	5886	16	2	2	3.5	26.0	16	3870	216	48	318	2.71	1
Dodge-St.-Regis	6342	17	2	2	4.5	28.0	21	3740	220	46	225	2.94	1
Fiat-Strada	4296	21	3	1	2.5	26.5	16	2130	161	36	105	3.37	3
Ford-Fiesta	4389	28	4	-	1.5	26.0	9	1800	147	33	98	3.15	1
Ford-Mustang	4187	21	3	3	2.0	23.0	10	2650	179	42	140	3.08	1
Honda-Accord	5799	25	5	5	3.0	25.5	10	2240	172	36	107	3.05	2
Honda-Civic	4499	28	4	4	2.5	23.5	5	1760	149	34	91	3.30	2
Linc.-Continental	11497	12	3	4	3.5	30.5	22	4840	233	51	400	2.47	1
Linc.-Cont-Mark-V	13594	12	3	4	2.5	28.5	18	4720	230	48	400	2.47	1
Linc.-Versailles	13466	14	3	3	3.5	27.0	15	3830	201	41	302	2.47	1
Mazda-GLC	3995	30	4	4	3.5	25.5	11	1980	154	33	86	3.73	1
Merc.-Bobcat	3829	22	4	3	3.0	25.5	9	2580	169	39	140	2.73	1
Merc.-Cougar	5379	14	4	3	3.5	29.5	16	4060	221	48	302	2.75	1
Merc.-Cougar-XR-7	6303	14	4	4	3.0	25.0	16	4130	217	45	302	2.75	1
Merc.-Marquis	6165	15	3	2	3.5	30.5	23	3720	212	44	302	2.26	1
Merc.-Monarch	4516	18	3	-	3.0	27.0	15	3370	198	41	250	2.43	1
Merc.-Zephyr	3291	20	3	3	3.5	29.0	17	2830	195	43	140	3.08	1
Olds.-98	8814	21	4	4	4.0	31.5	20	4060	220	43	350	2.41	1
Olds.-Cutlass	4733	19	3	3	4.5	28.0	16	3300	198	42	231	2.93	1
Olds.-Cutl-Supr	5172	19	3	4	2.0	28.0	16	3310	198	42	231	2.93	1
Olds.-Delta-88	5890	18	4	4	4.0	29.0	20	3690	218	42	231	2.73	1
Olds.-Omega	4181	19	3	3	4.5	27.0	14	3370	200	43	231	3.08	1
Olds.-Starfire	4195	24	1	1	2.0	25.5	10	2720	180	40	151	2.73	1
Olds.-Tornado	10371	16	3	3	3.5	30.0	17	4030	206	43	350	2.41	1
Peugeot-604-SL	12990	14	-	-	3.5	30.5	14	3420	192	38	163	3.58	3
Plym.-Arrow	4647	28	3	3	2.0	21.5	11	2360	170	37	156	3.05	1
Plym.-Champ	4425	34	5	4	2.5	23.0	11	1800	157	37	86	2.97	1
Plym.-Horizon	4482	25	3	-	4.0	25.0	17	2200	165	36	105	3.37	1
Plym.-Sapporo	6486	26	-	-	1.5	22.0	8	2520	182	38	119	3.54	1
Plym.-Volare	4060	18	2	2	5.0	31.0	16	3330	201	44	225	3.23	1
Pont.-Catalina	5798	18	4	4	4.0	29.0	20	3700	214	42	231	2.73	1
Pont.-Firebird	4934	18	1	2	1.5	23.5	7	3470	198	42	231	3.08	1
Pont.-Grand-Prix	5222	19	3	3	2.0	28.5	16	3210	201	45	231	2.93	1
Pont.-Le-Mans	4723	19	3	3	3.5	28.0	17	3200	199	40	231	2.93	1
Pont.-Phoenix	4424	19	-	-	3.5	27.0	13	3420	203	43	231	3.08	1
Pont.-Sunbird	4172	24	2	2	2.0	25.0	7	2690	179	41	151	2.73	1
Renault-Le-Car	3895	26	3	3	3.0	23.0	10	1830	142	34	79	3.72	3
Subaru	3798	35	5	4	2.5	25.5	11	2050	164	36	97	3.81	2
Toyota-Cecila	5899	18	5	5	2.5	22.0	14	2410	174	36	134	3.06	2
Toyota-Corolla	3748	31	5	5	3.0	24.5	9	2200	165	35	97	3.21	2
Toyota-Corona	5719	18	5	5	2.0	23.0	11	2670	175	36	134	3.05	2
VW-Rabbit	4697	25	4	3	3.0	25.5	15	1930	155	35	89	3.78	3
VW-Rabbit-Diesel	5397	41	5	4	3.0	25.5	15	2040	155	35	90	3.78	3
VW-Scirocco	6850	25	4	3	2.0	23.5	16	1990	156	36	97	3.78	3
VW-Dasher	7140	23	4	3	2.5	37.5	12	2160	172	36	97	3.74	3
Volvo-260	11995	17	5	3	2.5	29.5	14	3170	193	37	163	2.98	3