The exam will focus in depth on three essential areas of math: Problem Solving and Data Analysis, the Heart of Algebra, and Passport to Advanced Math.
考试将深度聚焦在数学的三个关键领域：问题解决能力和数据分析，核心代数，以及向高等数学的过渡。
Data preprocessing is the key to provide high quality data for exam analysis system.
数据预处理是为考试分析系统提供高质量数据的关键。
In order to get the better useful information from the exam data, which with complex and uncertain data, it is necessary to preprocess the source data.
为了更好地从大量复杂的和不确定的考试数据中有效地挖掘有用的信息，必须对源数据进行预处理。
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