Abstract
In order to research the significancy level and difference in different groups of test score data, the way for checking data’s normal character is introduced. In order to realizing variance analysis, t test and Wilcoxon test, the SAS function, such as SORT, UNIVARIATE NORMAL, TTEST COCHRAN and NPAR1WAY WILCOXON are presented. According to real data, the distribution histgraph, X2 values, normal test, signed-rank test, and Wilcoxon two-sample test are gained. The study in this paper can be adopted in other fields of test design and data analysis.
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