s/n Process Distribution Square error
1 Raw material requisition 3.5+3× BETA (0.3847, 0.648) 0.023693
2 Machine set up 4.5+3 × BETA (0.896, 0.979) 0.004202
3 Hopper 3.5+3 × BETA (1.05, 0.7336) 0.012719
4 Turn on heater 5.5+3 × BETA (11.76, 2.47) 0.000290
5 Turn on motor granular plastic
melted move to screw thread
22.5+3 × BETA (11.16, 1.52) 0.001000
6 Melted plastic forced into mold 5.5+GAMM (0.663, 22.87) 0.011748
7 Takeoff 4.5+5 × BETA (0.928, 11.35) 0.019469
8 Package 6.5+4 × BETA (0.996, 1.44) 0.002769
Table 1: PVC pipe process time distribution in injection.