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。
To introduce the application of one-tailed hypothesis test and confidence interval to wire rope breaking force e- valuation. 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 ob- tained 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.
出处
《金属制品》
2012年第2期73-74,77,共3页
Metal Products
关键词
钢丝绳
破断拉力
正态分布
单侧假设检验
区间估计
wire rope
breaking force
normal distribution
one-tailed hypothesis test
interval estimation
