Page 286 - Lean six sigma demystified
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264 Lean Six Sigma DemystifieD
Upper CUSUM
C+
6.00 C–
Lower CUSUM
4.00
2.00
CUSUM 0.00
–2.00
–4.00
S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30
–6.00
Sample
Figure 8-11 • CUSUM chart.
11.75
11.51
UCL
11.25
10.75
EWMA 10.25 CL 10.32
9.75
LCL
9.25 9.12
8.75
123456789 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Sample
Figure 8-12 • EWMA chart.
