* Real Consumption Expenditure and Real Disposable Income: Log Transformation;
data fred;

   c             y
   7.47902       7.57840
   7.49159       7.58381
   7.48762       7.58467
   7.48897       7.58406
   7.48869       7.59312
   7.50346       7.60808
   7.50829       7.62164
   7.52812       7.64108
   7.53871       7.65050
   7.55092       7.66162
   7.55899       7.66716
   7.57307       7.67536
   7.57978       7.68363
   7.58929       7.69307
   7.60280       7.70432
   7.61115       7.72073
   7.63070       7.74049
   7.64812       7.76731
   7.66632       7.78018
   7.66912       7.79169
   7.69111       7.80278
   7.70210       7.81379
   7.71913       7.84094
   7.74686       7.86100
   7.76153       7.87032
   7.76408       7.87272
   7.77549       7.88525
   7.77963       7.89663
   7.78543       7.91147
   7.79897       7.91965
   7.80409       7.92916
   7.81023       7.93645
   7.83384       7.95374
   7.84905       7.97022
   7.86768       7.97223
   7.87227       7.97879
   7.88341       7.98050
   7.88976       7.99054
   7.89458       8.01066
   7.90252       8.01793
   7.90864       8.02293
   7.91323       8.04029
   7.92194       8.05370
   7.91921       8.05042
   7.93816       8.07006
   7.94729       8.08496
   7.95522       8.08939
   7.97171       8.09992
   7.98497       8.10618
   8.00390       8.11555
   8.01922       8.13582
   8.04241       8.17484
   8.06054       8.18610
   8.06004       8.19594
   8.06360       8.20095
   8.06067       8.21308
   8.05188       8.19762
   8.05535       8.18900
   8.05947       8.19213
   8.04472       8.18758
   8.05306       8.18365
   8.06959       8.22932
   8.08376       8.21571
   8.09429       8.22577
   8.11409       8.24039
   8.12320       8.24858
   8.13373       8.25757
   8.14665       8.26472
   8.15803       8.26552
   8.16354       8.27685
   8.17304       8.29175
   8.18799       8.31169
   8.19382       8.31786
   8.21498       8.32927
   8.21916       8.33737
   8.22719       8.34517
   8.23223       8.35606
   8.23164       8.34904
   8.24141       8.35475
   8.24407       8.36271
   8.24234       8.36549
   8.21938       8.35140
   8.23004       8.36164
   8.24328       8.38208
   8.24874       8.37979
   8.24874       8.37991
   8.25279       8.40187
   8.24520       8.40389
   8.25164       8.40505
   8.25523       8.41201
   8.26287       8.41640
   8.28094       8.41989
   8.29069       8.42775
   8.31034       8.43501
   8.32787       8.44992
   8.34360       8.47033
   8.35213       8.49196
   8.36635       8.50904
   8.37402       8.52449
   8.38711       8.53395
   8.40394       8.53149
   8.41299       8.55115
   8.43181       8.54495
   8.43401       8.55524
   8.44232       8.56709
   8.45291       8.57838
   8.47025       8.58360
   8.47625       8.58420
   8.47472       8.59033
   8.48803       8.57942
   8.49911       8.59715
   8.50151       8.61125
   8.51807       8.62373
   8.52532       8.63307
   8.53319       8.64074
   8.54489       8.64971
   8.54856       8.66102
   8.55302       8.65692
   8.56333       8.66337
   8.56821       8.67100
   8.57609       8.67848
   8.57938       8.68506
   8.58317       8.68577
   8.57537       8.67901
   8.57251       8.68208
   8.58011       8.68965
   8.58392       8.69175
   8.58347       8.69825
   8.60052       8.71324
   8.60643       8.72087
   8.61742       8.72593
   8.62956       8.74005
   8.63359       8.72526
   8.64314       8.74071
   8.65394       8.74285
   8.66280       8.75749
   8.67387       8.75347
   8.68127       8.77038
   8.68925       8.77769
   8.69907       8.79088
   8.70023       8.79734
   8.70839       8.79743
   8.71729       8.80490
   8.72431       8.81079
   8.73342       8.82139
   8.74466       8.83209
   8.75062       8.84057
   8.75874       8.84604
   8.76876       8.85494
   8.77280       8.86241
   8.78966       8.87380
   8.80103       8.88758
   8.81094       8.91007
   8.82800       8.92426
   8.84117       8.93472
   8.85639       8.94200
   8.86620       8.94877
   8.88182       8.95105
   8.89377       8.95750
   8.90778       8.97306
   8.92283       8.99385
   8.93219       9.00404
   8.94193       9.01461
   8.95073       9.01610
   8.95471       9.02359
   8.95848       9.02084
   8.96287       9.04600
   8.97841       9.03426
   8.98185       9.06087
   8.98692       9.06634
   8.99368       9.06291
   8.99722       9.06527
   9.00237       9.06893
   9.01162       9.08393
   9.02547       9.09778
   9.03097       9.10347
   9.04045       9.10785
   9.04584       9.11768
   9.05437       9.12434
   9.06580       9.13814
   9.07326       9.12583
   9.08284       9.13270
   9.08993       9.13863
   9.09251       9.14406
   9.10349       9.16260
   9.10886       9.17132
   9.11501       9.17601
   9.12496       9.18899
   9.13401       9.19322
   9.13686       9.19449
   9.14159       9.19866
   9.14459       9.19890
   9.14309       9.19287
   9.14324       9.21622
   9.13429       9.19404
   9.12645       9.20235
   9.12796       9.20295
   9.12576       9.21806
   9.13266       9.20878
   9.13664       9.21119