# <H2>DATA for multicollinearity </H2>
# 다음 자료에서 <P>
# y = b0 + b1*x1 + b2*x3 + b3*x3 + e
# <P>
# 인 회귀 모형을 적합하고자 할 때 다중공선성에 대한 검토를 
# 하여 보아라.
#<XMP>
 y        x1         x2         x3
 1  1.885183  0.8462315  0.7214040
 2  2.407178  2.0290623  2.0691477
 3  3.402349 -0.4954190 -0.1388364
 4  4.101373  1.4880772  1.4774835
 5  5.628996 -0.7000241 -0.5007927
 6  7.480914  4.9187517  4.9225634
 7  7.722405  4.4784364  4.1121255
 8  7.739600 15.3417922 15.2324526
 9  9.182301  5.8733004  5.8542884
10 12.233960  8.0770286  7.9467239
11  9.535100 11.4321813 11.5165455
12 12.488402 14.9909857 15.2410523
13 12.192237 11.1836595 10.6761112
14 13.368534 10.9843610 10.8957798
15 13.390032 13.4922821 13.8498633
16 14.718197 20.8186431 20.5396579
17 17.318137 19.9310119 20.0874946
18 17.298995 20.9692340 20.8913096
19 19.541108 16.0355404 16.2746277
20 18.857606 20.1903849 20.0640670
#</XMP>