准确度是指所测得的值与“真实值”有多靠近
精确度是指测量系统在多次测量同一标准样或样品的单一特性时,其所获的测量值有多一致,下面图表中那个准确度和精确度最好?(单选题)
0530课前作业:SPC基本理论知识竞答
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Fengjia Zhang
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10 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 10 pts
准确度是指所测得的值与“真实值”有多靠近
精确度是指测量系统在多次测量同一标准样或样品的单一特性时,其所获的测量值有多一致,下面图表中那个准确度和精确度最好?(单选题)
2.
MULTIPLE CHOICE QUESTION
10 mins • 10 pts
控制用控制图的作用是(单选题)
及时告警
起到贯彻预防作用
处理生产中的问题
消除不合格品
3.
MULTIPLE SELECT QUESTION
10 mins • 10 pts
下面公式正确的是(多选题)
4.
MULTIPLE SELECT QUESTION
10 mins • 10 pts
下面Cpk、Ppk、Cpm说法,正确的是(多选题)
Cp只考虑过程的波动,Cpk还体现了过程的中线集中度
Cpm是用相对目标的标准偏差计算的, σ_T 是相对目标的偏差而不是相对均值
Cp是短期过程能力
Pp是长期过程能力
5.
MULTIPLE CHOICE QUESTION
10 mins • 10 pts
下面图标正确的是
6.
MULTIPLE SELECT QUESTION
10 mins • 10 pts
下面公式正确的是
7.
MULTIPLE CHOICE QUESTION
10 mins • 10 pts
SQC(Statistical quality control)是指对于结果(过程或转化单元的输出)的统计和控制, SPC(Statistical process control)是指对于过程或转化单元内参数的统计和控制
对
错
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