2. Explain the two types of variation and give an example of each?

Prepare a Scatter Diagram using the total number of shipments and number of defective shipments. Does there appear to be a relationship? Explain. (Spts) Week No. of Shipments N0. of Shipment with Defects 1 23 15 2 31 12 3 28 14 4 37 10 5 35 11 6 40 6 7" 41 8 8 44 5 7. The Delta Electric Company produces incandescent lightbulbs. The following data on the number of lumens for Clo-watt lightbulbs were collected when the process was in control. The population standard deviation in NOT known. Calculate the Control limits for the XBar chart. Calculate the Control limits for the Range chart. Since the data were collected, some new empl0yees were hired. A new sample obtained the following readings: 625, 592, 612 and 635. Is the process still in control? (5pts) OBSERVATIONS SAMPLE 1 2 3 4 1 604 612 588 600 2 597 601 607 603 3 581 570 585 592 4 620 605 595 588 5 590 614 608 604