SAMPLE 1 20 READ(FIRM1.txt) YEAR IGM FGM CGM ICHR FCHR CCHR / SKIPLINES=1 READ(FIRM2.txt) YEAR IGE FGE CGE IWH FWH CWH / SKIPLINES=1 READ(FIRM3.txt) YEAR IUS FUS CUS / SKIPLINES=1 * Unrestricted SUR Estimation SYSTEM 5 / DN OLS IGM FGM CGM OLS ICHR FCHR CCHR OLS IGE FGE CGE OLS IWH FWH CWH OLS IUS FUS CUS * Hypothesis Testing TEST TEST FGM=FCHR TEST FGM=FGE TEST FGM=FWH TEST FGM=FUS END TEST TEST CGM=CCHR TEST CGM=CGE TEST CGM=CWH TEST CGM=CUS END TEST FGM=FCHR TEST FGM=FGE TEST FGM=FWH TEST FGM=FUS TEST FCHR=FGE TEST FCHR=FWH TEST FCHR=FUS TEST FGE=FWH TEST FGE=FUS TEST FWH=FUS TEST CGM=CCHR TEST CGM=CGE TEST CGM=CWH TEST CGM=CUS TEST CCHR=CGE TEST CCHR=CWH TEST CCHR=CUS TEST CGE=CWH TEST CGE=CUS TEST CWH=CUS * Test for equality of slope parameters for * General Electric (GE) and Westinghouse (WH) TEST TEST FGE=FWH TEST CGE=CWH END * Test for equality of slope parameters for * General Motors (GM), Chrysler (CHR) and U.S. Steel (US) TEST TEST FGM=FCHR TEST FGM=FUS TEST CGM=CCHR TEST CGM=CUS END STOP