This research has answered the following two questions:(1) How to divide the level of Data Processing capabilities in first and second stages and how about the concrete performance of different levels?(2)How different backgrounds impact Students' data processing capabilities? After the test the author has also interviewed with some students and teachers about some typical mistakes and problems to find out the reasons. Finally,with the results of the investigation,the author has provided some specific recommendations for curriculum design,teaching,learning and evaluation about the data processing curriculum.
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