Exercise

Question 1

Develop a Pareto analysis of the following causes of poor grades on an exam:

Reasons for poor Grade | Frequency |

Insufficient time to complete | 15 |

Late arrival for exam | 7 |

Difficulty understanding material | 25 |

Insufficient preparation time | 2 |

Studied wrong material | 2 |

Distractions in exam room | 9 |

Calculator batteries died during exam | 1 |

Forgot exam was scheduled | 3 |

Felt ill during exam | 4 |

Others | 5 |

Question 2

Mary, the manager of an apartment complex, feels overwhelmed by the number of complaints she is receiving. Below is the check sheet she has kept for last 12 weeks. Develop a Pareto chart using this information. What recommendation would you make?

Week | Grounds | Parking/Drives | Pool | Tenant Issues | Electrical/Plumbing |

1 | √ √ √ | √ | √ | √ √ √ | |

2 | √ | √ √ √ | √ √ | √ √ | √ |

3 | √ √ √ | √ √ √√ | √ √ | √ | |

4 | √ | √ √ √ | √ | √ | √ √ |

5 | √ √ | √ √ √√ | √ √ √√ | √ √ | |

6 | √ | √ √ √ | √ √ | | |

7 | | √ √ √√ | √ √ | √ √ | |

8 | √ | √ √ √√√ | √ √ | √ √ √ | √ |

9 | √ | √ √ | √ | | |

10 | √ | √ √ √√ | √ √ | √ √ | |

11 | | √ √ √ | √ √ | √ | |

12 | √ √ | √ √ √ | √ √ √ | √ | |

Question 3

Southwest Wood Treating has been getting many complaints from a major customer. Home Station, about the quality of its shipments of pressure-treated products. Rick , the plant manager, is alarmed that a customer is providing him with the only information the company has on shipment quality. He decided to collect information on defective shipments through a form he asked his drivers to complete on arrival at customers’ stores. The forms for the first 284 shipments have been turned in. They show the following over the last 8 weeks:

Week | No. of Shipments | No. of Shipments with defects | Reason for defective shipment |

| | | Incorrect bill of lading | Incorrect Truckload | Damaged Product | Trucks Late |

1 | 23 | 5 | 2 | 2 |...