Given the data below, a lower specification of 78.2, and an
upper specification of 98.9, what is the long term process
performance (Ppk)?
Data
101.4791
94.02297
95.41277
106.7218
90.35416
86.9332
94.87044
95.91265
93.98042
108.558
86.17921
85.01441
96.14778
92.59247
92.49536
87.4595
104.3463
90.57274
99.38992
80.61536
82.31772
97.05331
87.64293
103.3648
98.09292
87.72921
110.1765
86.76847
87.22422
94.88148
86.01183
91.43283
104.0907
97.77132
98.69138
95.55565
106.2402
95.96255
88.05735
100.2796
99.00995
86.18458
95.41366
99.32314
95.75733
88.82675
93.39986
98.34077
94.72198
99.14256
92.37767
94.94969
89.63531
87.56148
88.02731
97.57498...