Date:         Thu, 27 Mar 1997 17:32:15 -0500
Reply-To:     Steven Hill <hills@SFWMD.GOV>
Sender:       "SAS(r) Discussion" <SAS-L@UGA.CC.UGA.EDU>
From:         Steven Hill <hills@SFWMD.GOV>
Subject:      Random samples

SAS-ler's:
 
I have data from 1974 to 1997. I have divided the data into quarters
(eg jan-mar =q1 apr-jun=q2 etc).  I would like to randomly sample the
quarterly values (QT) within each year and Test_nam to get a value to represent the quarter
(eg randomly pick a value to represent quarter 1 in 1974, quarter 2 in 1974
... quarter 4 in 1997 from the quaterly values).  A subset of the data is below.
Thanks for any help you can offer with the SAS code to do this.
 
Steven
p.s.  QT in the data set represents the value for quarter.
 
       OBS    STATION        DATE    YEAR    QT     TEST_NAM     VALUE
 
         1      S5A      06/03/74    1974     2    ALKALINITY    356.0
         2      S5A      06/10/74    1974     2    ALKALINITY    371.0
         3      S5A      06/17/74    1974     2    ALKALINITY    334.5
         4      S5A      06/24/74    1974     2    ALKALINITY    355.5
         5      S5A      07/01/74    1974     3    ALKALINITY    206.5
         6      S5A      07/08/74    1974     3    ALKALINITY     72.0
         7      S5A      07/15/74    1974     3    ALKALINITY    212.0
         8      S5A      07/22/74    1974     3    ALKALINITY     27.0
         9      S5A      07/29/74    1974     3    ALKALINITY     30.0
        10      S5A      08/12/74    1974     3    ALKALINITY    195.5
        11      S5A      08/26/74    1974     3    ALKALINITY    229.5
        12      S5A      09/09/74    1974     3    ALKALINITY    277.0
        13      S5A      09/16/74    1974     3    ALKALINITY    245.0
        14      S5A      09/23/74    1974     3    ALKALINITY    125.0
        15      S5A      09/30/74    1974     3    ALKALINITY    446.5
        16      S5A      10/07/74    1974     4    ALKALINITY    197.0
        17      S5A      10/14/74    1974     4    ALKALINITY    326.0
        18      S5A      10/21/74    1974     4    ALKALINITY    212.0
        19      S5A      10/29/74    1974     4    ALKALINITY    153.0
        20      S5A      11/04/74    1974     4    ALKALINITY    110.5
        21      S5A      11/18/74    1974     4    ALKALINITY    122.5
        22      S5A      12/02/74    1974     4    ALKALINITY    291.0
        23      S5A      12/16/74    1974     4    ALKALINITY    227.5
        24      S5A      12/31/74    1974     4    ALKALINITY    242.0
        25      S5A      01/13/75    1975     1    ALKALINITY    216.0
        26      S5A      01/26/75    1975     1    ALKALINITY    167.0
        27      S5A      01/28/75    1975     1    ALKALINITY    179.5
        28      S5A      02/10/75    1975     1    ALKALINITY    124.0
        29      S5A      02/25/75    1975     1    ALKALINITY    238.0
        30      S5A      03/10/75    1975     1    ALKALINITY    158.0
        31      S5A      03/24/75    1975     1    ALKALINITY    118.0
        32      S5A      04/07/75    1975     2    ALKALINITY    125.5
        33      S5A      04/21/75    1975     2    ALKALINITY    156.5
        34      S5A      05/05/75    1975     2    ALKALINITY    129.5
        35      S5A      05/19/75    1975     2    ALKALINITY    287.0
        36      S5A      06/02/75    1975     2    ALKALINITY    347.5
        37      S5A      06/16/75    1975     2    ALKALINITY    131.0
        38      S5A      06/30/75    1975     2    ALKALINITY    129.0
        39      S5A      07/14/75    1975     3    ALKALINITY    228.0
        40      S5A      07/28/75    1975     3    ALKALINITY    409.0
        41      S5A      08/11/75    1975     3    ALKALINITY    358.5
        42      S5A      08/25/75    1975     3    ALKALINITY    432.0
        43      S5A      09/08/75    1975     3    ALKALINITY    409.5
        44      S5A      09/22/75    1975     3    ALKALINITY    367.5
        45      S5A      10/06/75    1975     4    ALKALINITY    426.5
        46      S5A      10/20/75    1975     4    ALKALINITY    406.0
        47      S5A      11/04/75    1975     4    ALKALINITY    544.5
        48      S5A      11/18/75    1975     4    ALKALINITY    420.5
        49      S5A      12/01/75    1975     4    ALKALINITY    147.5
        50      S5A      12/15/75    1975     4    ALKALINITY    157.5
        51      S5A      12/29/75    1975     4    ALKALINITY    138.5
        52      S5A      12/29/75    1975     4    ALKALINITY    141.0
        53      S5A      02/09/76    1976     1    ALKALINITY    235.5
        54      S5A      02/23/76    1976     1    ALKALINITY    203.5
        55      S5A      03/08/76    1976     1    ALKALINITY    409.0
        56      S5A      03/22/76    1976     1    ALKALINITY    274.0
        57      S5A      04/05/76    1976     2    ALKALINITY    132.0
        58      S5A      04/19/76    1976     2    ALKALINITY    144.5
        59      S5A      10/09/78    1978     4    ALKALINITY    321.0
        60      S5A      10/23/78    1978     4    ALKALINITY    184.0
        61      S5A      11/06/78    1978     4    ALKALINITY    209.0
        62      S5A      11/20/78    1978     4    ALKALINITY    156.5
        63      S5A      12/04/78    1978     4    ALKALINITY    149.5
        64      S5A      12/18/78    1978     4    ALKALINITY    241.5
        65      S5A      01/02/79    1979     1    ALKALINITY    386.5