A maintenance group aims to improve the effectiveness of its repair work. The gr

Question

A maintenance group aims to improve the effectiveness of its repair work. The group therefore monitors the number of maintenance requests that require a second visit to complete the repair. On any given week the maintenance group responds to 200 maintenance requests. The following table summarizes the number of those maintenance requests that required a second visit in the last five weeks.

Week Number 1 2 3 4 5

Number of those maintanance requests that required a second visit 6 8 9 7 3

What type of control chart should be used here?

Select one: a. mean chart b. range chart c. p-chart d. c-chart e. run test

Explanation / Answer

e. Run test is the one that needs to be used. Because of the fact that there is no specific pattern to the data. The data does not follow any pattern.

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