Math Problem Statement
用两种不同的测定方法,测定同一种中草药的有效成分,共重复20次,得到实验结果如表 2所示。(10分) 试用符号检验法检验两测定有无显著差异; 试用Wilcoxon符号秩检验法检验两测定有无显著差异; 试用Wilcoxon秩和检验法检验两测定有无显著差异; 对数据作正态性和方差性检验,该数据是否能作t检验,如果能,请作t检验; 分析各种的检验方法,试说明哪种检验法效果最好。 方法A 48.0 33.0 37.5 48.0 42.5 40.0 42.0 36.0 11.3 22.0 36.0 27.3 14.2 32.1 52.0 38.0 17.3 20.0 21.0 46.1 方法B 37.0 41.0 23.4 17.0 31.5 40.0 31.0 36.0 5.7 11.5 21.0 6.1 26.5 21.3 44.5 28.0 22.6 20.0 11.0 22.3 表 2: 两种不同的测定方法得到的结果
Solution
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Math Problem Analysis
Mathematical Concepts
Non-parametric statistics
Hypothesis testing
Normality test
Variance test
t-test
Formulas
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Theorems
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Suitable Grade Level
Higher Education
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