Fujiyama Electronics

In: Business and Management

Submitted By usedtool
Words 903
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PowerPoint Problems

Chapter 14 – Problem 14

Problem Statement

Fujiyama Electronics, Inc. has been having difficulties with circuit boards purchased from an outside supplier. Unacceptable variability occurs between two drilled holes that are supposed to be 5 cm apart on the circuit boards. Thirty samples of 4 boards each were taken from shipments from the supplier as shown in the data from the worksheet Prob. 14-14, listed below.
a. Construct [pic] and R charts for these data.
b. If the supplier’s plant quality manager admitted that they were experiencing quality problems for shipments 18, 19, and 21, how would that affect your control chart? Show this adjustment on revised [pic] and R charts for these data.

Data

|1 |4.92 |4.26 |4.94 |4.29 |
|2 |4.65 |5.54 |5.00 |5.42 |
|3 |5.77 |5.26 |4.76 |4.79 |
|4 |6.25 |4.88 |5.66 |4.44 |
|5 |5.27 |5.41 |6.02 |4.91 |
|6 |5.22 |5.38 |5.08 |4.65 |
|7 |5.47 |4.68 |4.56 |4.70 |
|8 |5.71 |4.54 |4.17 |4.87 |
|9 |5.24 |5.58 |4.72 |5.41 |
|10 |4.42 |5.18 |4.79 |4.73 |
|11 |5.14 |4.26 |4.71 |5.48 |
|12 |4.92 |5.78 |5.50 |5.05 |
|13 |5.79 |3.83 |4.30 |4.78 |
|14 |4.92 |4.80 |4.75 |5.59 |
|15 |5.68 |5.74 |4.65 |5.20 |
|16 |5.43 |4.81 |5.27 |4.96…...

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