<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM SPSS INC.
AND SUBSIDIARIES CONSOLIDATED BALANCE SHEET AT DECEMBER 31, 1997 AND
CONSOLIDATED STATEMENT OF INCOME FOR THE THREE AND TWELVE MONTHS ENDED DECEMBER
31, 1997 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<RESTATED>
<MULTIPLIER> 1,000

<S>                             <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997
<PERIOD-END>                               DEC-31-1997             DEC-31-1997
<CASH>                                               0                 $10,067
<SECURITIES>                                         0                       0
<RECEIVABLES>                                        0                  29,974
<ALLOWANCES>                                         0                   1,776
<INVENTORY>                                          0                   2,520
<CURRENT-ASSETS>                                     0                  43,663
<PP&E>                                               0                  28,557
<DEPRECIATION>                                       0                  19,059
<TOTAL-ASSETS>                                       0                  65,189
<CURRENT-LIABILITIES>                                0                  29,675
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                             0                      93
<OTHER-SE>                                           0                  32,228
<TOTAL-LIABILITY-AND-EQUITY>                         0                  65,189
<SALES>                                         30,137                 111,106
<TOTAL-REVENUES>                                30,137                 111,106
<CGS>                                            2,568                   9,835
<TOTAL-COSTS>                                    2,568                   9,835
<OTHER-EXPENSES>                                22,484                  95,210
<LOSS-PROVISION>                                   298                     447
<INTEREST-EXPENSE>                                  62                     210
<INCOME-PRETAX>                                  4,827                   5,933
<INCOME-TAX>                                     1,582                   3,189
<INCOME-CONTINUING>                              3,245                   2,744
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                     3,245                   2,744
<EPS-BASIC>                                       0.35                    0.29
<EPS-DILUTED>                                     0.32                    0.27


</TABLE>