| 单侧假设检验和置信区间在钢丝绳破断拉力评价中的应用 |
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| 引用本文： | 沈志军. 单侧假设检验和置信区间在钢丝绳破断拉力评价中的应用[J]. 金属制品, 2012, 38(2): 73-74,77 |
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| 作者姓名： | 沈志军 |
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| 作者单位： | 咸阳宝石钢管钢绳有限公司,陕西咸阳,712000 |
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| 摘 要： | 介绍单侧假设检验和置信区间在钢丝绳破断拉力评价中的应用。从某段时间依据标准API 9A、JIS G3525和GB 8918生产的所有钢丝绳中,根据1个标准抽取1组子样的原则进行抽样并统计分析。根据统计分析的结果可得出结论:(1)单侧假设检验可以对批量钢丝绳破断拉力的质量水平进行分析;(2)区间估计可以给出批量钢丝绳破断拉力值的大致范围。
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| 关 键 词： | 钢丝绳 破断拉力 正态分布 单侧假设检验 区间估计 |
Application of one-tailed hypothesis test and confidence interval to wire rope breaking force evaluation |
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| SHEN Zhi-jun. Application of one-tailed hypothesis test and confidence interval to wire rope breaking force evaluation[J]. Steel Wire Products, 2012, 38(2): 73-74,77 |
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| Authors: | SHEN Zhi-jun |
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| Affiliation: | SHEN Zhi-jun(Xianyang BOMCO Steel Tube and Wire Rope Co.,Ltd.,Xianyang 712000,China) |
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| Abstract: | To introduce the application of one-tailed hypothesis test and confidence interval to wire rope breaking force evaluation.According to the principle of extracting one group sub sample basis on one standard to extract wire rope samples which were produced by standard API 9A,JIS G 3525 and GB 8918 and to carry out statistical analysis.Conclusion are obtained from statistical analysis result:(1)the one-tailed hypothesis test can be used to analyze quality level of batch of wire rope breaking force;(2) interval estimation can give value scope of batch wire rope breaking force. |
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| Keywords: | wire rope breaking force normal distribution one-tailed hypothesis test interval estimation |
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