以下是一組由SPSS軟件生成的指數分布數據（尺度參數為0.5,隨機數種子為20110828）,樣本量為200個.數據生成后,樣本的實際尺度參數（Scale）為0.463.由于SPSS的指數分布就是指你題目的負指數分布,因此你寫方程的時候需要在這個尺度參數前面添加負號.
序號指數分布數據
11.117686
20.728264
33.794003
41.555668
55.257105
60.134758
72.844179
83.089599
90.202951
101.268993
113.795615
126.053744
130.450658
141.262964
150.426961
162.379259
173.225800
180.300970
190.312063
202.742296
214.344003
220.256181
232.337959
243.850905
254.207210
262.824085
271.048544
280.773509
294.135302
300.042742
310.109053
321.177222
331.090805
341.436744
352.013709
361.553639
370.252758
384.469579
391.173457
404.943019
413.375083
421.580591
434.944690
442.757598
4515.847429
461.355288
470.453924
480.453976
4911.506719
501.255070
510.091886
521.141864
531.367810
543.739776
550.225735
564.516449
571.494509
583.248553
591.775570
600.467821
614.809442
622.396843
631.699018
641.228241
650.092686
666.104005
671.921275
683.497936
690.906117
706.467587
711.621491
722.347274
735.247323
740.916879
753.707962
761.455495
772.519209
783.707813
791.766566
801.593878
811.208971
820.352950
831.313183
842.120385
850.709285
866.236147
872.574456
880.846233
891.092902
901.493666
911.163235
926.147487
930.751603
940.651789
953.829525
962.405720
971.495385
980.125651
991.762720
1000.794904
1010.537212
1022.091095
1030.134064
1040.931893
1053.475444
1062.625395
1071.058602
1080.070190
1091.018421
1102.095005
1112.481616
1121.975254
11310.756611
1143.462771
1152.281229
1160.162893
1170.916559
1180.790805
1195.626170
1204.465439
1210.236941
1221.653047
1230.640316
1241.423074
1254.039765
1262.674469
1271.047192
1281.671151
1290.278864
1302.242696
1313.303707
1322.455026
1330.574471
1341.963581
1350.311549
1360.158752
1371.230202
1385.394582
1390.546645
1400.723066
1413.299909
1420.794065
1430.227998
1441.346130
1450.740729
1465.179519
1470.295774
1480.303338
1493.794150
1500.018366
1511.548150
1520.220077
1530.203864
1540.211826
1551.354434
1563.735840
1574.711437
1580.505803
1592.390608
1600.988278
1610.035904
1622.005495
1635.406828
1640.818130
1651.778912
1660.022496
1671.344729
1683.696187
1690.138438
1700.893858
1710.907097
17210.043202
1732.958157
1741.155547
1752.408568
1761.217030
1772.154850
1782.568864
1790.517577
1800.711288
1811.493186
1821.276109
1831.265452
1843.415962
1851.699722
1867.260680
1870.877607
1882.809602
1892.788893
1901.762893
1910.945357
1922.579852
1930.782932
1940.110515
1951.369161
1963.874614
1970.401046
1987.494932
1990.164668
2001.637599