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发帖数: 26 | 1 I have a time series, which is the year over year change percentage,
and i know the initial level for the first year.
Any convenient way to calculate the rest of the levels from the percentages
in SAS?
DATE Year_o_Year Level
Jul-10 35.00234548
Aug-10 18.31685944
Sep-10 27.01983896
Oct-10 35.05715036
Nov-10 14.20199771
Dec-10 14.79919135
Jan-11 6.421677711
Feb-11 22.93815807
Mar-11 21.28093906
Apr-11 5.694335608
May-11 5.841326383
Jun-11 24.01326608
Jul-11 0.44679818
Aug-11 0.680831265
Sep-11 0.680258189
Oct-11 0.040528309
Nov-11 0.011061227
Dec-11 0.212436546
Jan-12 0.857983514
Feb-12 0.856902812
Mar-12 0.681651115
Apr-12 0.53991021
May-12 0.050727428
Jun-12 0.569008711
Jul-12 0.7970981
Aug-12 0.49288377
Sep-12 0.51868141
Oct-12 0.950043325
Nov-12 0.482647641
Dec-12 0.365952436
Jan-13 0.400027686
Feb-13 0.266410676
Mar-13 0.480602544
Apr-13 0.584493576
May-13 0.942144643
Jun-13 0.029128891
Jul-13 0.840447571
Aug-13 0.611925184
Sep-13 0.617722007
Oct-13 0.32064494
Nov-13 0.278143534
Dec-13 0.545722632 | j******o
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