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Control Test 4: N subgroups in a row, alternating up and down
This test checks to see if N subgroups in a row are alternately increasing in value then
decreasing in value. The Nth subgroup and all following subgroups that meet the test
criteria will be marked with a red asterisk.
For example, if N=3:
Control Test 5: M out of N subgroups in a row in Zone A or beyond (same
side of center)
This test checks to see if M out of N subgroups in a row on the same side of the center
line are in Zone A or beyond. The Mth subgroup that meets the test criteria will be
marked with a red asterisk.
For example, if M=2 and N=3:
GFK-1413E
Configuring SPC Data
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