| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To correctly compare statistics about questionnaires before and after an event or the like even when the constituents of a candidate group such as answerers or testees are different. <P>SOLUTION: When the constituents of a first candidate group from which first data 11 is acquired and a second candidate group from which second data 12 is acquired are partially changed, a comparison data extracting means 15 selects data from common members included in both the candidate groups and data from temporary members belonging to only one of those object candidates according to a selection rule, and a data comparing means 16 operates the statistical processing of selected first data for comparison and second data for comparison, and verifies a difference between those data. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
