数据：
A) Title: Income Data

B) Relevant Information:

Marketing Database.

Source: Impact Resources, Inc., Columbus, OH (1987).
A total of N=9409 questionnaires containg 502 questions were
filled out by shopping mall customers in the San Francisco Bay area.

1    ANNUAL INCOME OF HOUSEHOLD (PERSONAL INCOME IF SINGLE)
             1. Less than $10,000
             2. $10,000 to $14,999
             3. $15,000 to $19,999
             4. $20,000 to $24,999
             5. $25,000 to $29,999
             6. $30,000 to $39,999
             7. $40,000 to $49,999
             8. $50,000 to $74,999
             9. $75,000 or more

&& strcmp(line(),:
            line=fgetl(fid);
            SEX{i}=line(:end);
         end
        %display(line);
        continue;
        continue;
    end
     && strcmp(line(),:
            line=fgetl(fid);
            MARITAL_STATUS{i}=line(:end);
        end
        continue;
    end
end