spc-table for constants

3
Table for Factors For Computing Control Charts Limits Chart Factor 2 3 4 5 6 7 8 1 Xbar 1.881 1.023 0.729 0.577 0.483 0.419 0.373 2 X (Median) 1.880 1.187 0.769 0.691 0.549 0.509 0.432 3 R (Range) 0 0 0 0 0 0.076 0.136 4 - 3.267 2.575 2.282 2.115 2.004 1.924 1.864 5 0 0 0 0 0.030 0.118 0.185 3.267 2.568 2.266 2.089 1.970 1.882 1.815 1.128 1.693 2.059 2.326 2.534 2.704 2.847 S. No. A2 F2 D3 D4 s (Std. Deviation) B3 B4 d2

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SPC-table for constants

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Page 1: SPC-Table for Constants

Table for Factors For Computing Control Charts LimitsChart Factor 2 3 4 5 6 7 8 9

1 Xbar 1.881 1.023 0.729 0.577 0.483 0.419 0.373 0.337

2 X (Median) 1.880 1.187 0.769 0.691 0.549 0.509 0.432 0.412

3 R (Range) 0 0 0 0 0 0.076 0.136 0.184

4 - 3.267 2.575 2.282 2.115 2.004 1.924 1.864 1.816

5 0 0 0 0 0.030 0.118 0.185 0.239

3.267 2.568 2.266 2.089 1.970 1.882 1.815 1.761

1.128 1.693 2.059 2.326 2.534 2.704 2.847 2.970

S. No.

A2

F2

D3

D4

s (Std.

Deviation)

B3

B4

d2

Page 2: SPC-Table for Constants

Table for Factors For Computing Control Charts Limits10

0.308

0.363

0.223

1.777

0.284

1.716

3.078

Page 3: SPC-Table for Constants

Formulae

UCL=