DATA7-7:  Data on annual (1995) salary for professors at the seven
    universities: UC Berkeley, UCLA, UC San Diego, Illinois, Michigan,
    Stanford, and Virginia.  
    salary = annual salary in thousands of dollars (Range 41.3 - 153).
    years  = number of years since Ph.D. (Range 1 - 45).
    d1 through d6 are dummy variables for six Universities, but are not
    specifically identified so as to maintain the confidentiality. 

SAMPLE 1 222
READ (DATA7-7) salary years d1 d2 d3 d4 d5 d6