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Use Capability Analysis (Between/Within) to produce a process capability report using both between-subgroup and within-subgroup variation. When you collect data in subgroups, random error within subgroups may not be the only source of variation to consider. There may also be random error between subgroups. Under these conditions, the between/within process variation is due to both the between-subgroup variation and the within-subgroup variation.
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george.cao (威望:13) (江苏 苏州) 机械制造 主管 - 98年毕业
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Use Capability Analysis (Between/Within) to produce a process capability report using both between-subgroup and within-subgroup variation. When you collect data in subgroups, random error within subgroups may not be the only source of variation to consider. There may also be random error between subgroups. Under these conditions, the between/within process variation is due to both the between-subgroup variation and the within-subgroup variation.