背景：
在x市本地线路架设工程中，某施工处承担户线安装部分，包括分线设备下线（称爬杆线）和用户室外线两部分。线缆走向整齐、合理，并于8日30日全部安装完成，从9月1日开始由技术人员对线缆进行测试，在测试过程中发现其中存在很多质量问题，统计如表所示。
问题：
(1)应用排列图法分析存在的质量问题。
(2)存在的主要质量问题是什么？
参考答案：
（1)首先将在测试过程中发现的不合格项原始资料进行加工整理，画出排列表和绘出排列图。采取排列图法可直观地看出影响质量的主要因素，便于有针对性的前期预防和后期检查，确保工程质量。如表、图：示。 
(2)通过排列图法分析可以看出，在测试过程中发现的主要质量问题是线序有误及端头制作不良两项，这两项出现的不合格数占全部不合格的76.25％，因此这两项应作为质量改进的主要对象。
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| My relationship with my father has an enormous impact on my life. Overall, I 1 a very great sense of love and well-being when I remember Dad. He was 2 to providing the best he could for us. When 3 , I was a bit in awe of Dad. I loved him dearly but I was also a little afraid of him; I was afraid of 4 him because I knew he could get angry and shout and this 5 me. Dad would scoop us up (抱起) and hug and 6 us. He was loud and larger, in happiness as well as when 7 . He had a great sense of humor. 8 he was not a great reader, I do remember him reading Tom Sharpe books and 9 raucously (嘶哑地) to himself in the process. Dad was enormously 10 of his family. He praised us to anyone who would listen and 11 in front of us."I can take my kids anywhere; they're always well 12 ." As an adult, I would turn to Dad 13 advice and support and he was always there. The main 14 I recall is that whatever age I was, there was always a strong, powerful hug and kiss 15 I saw him. It is over seven years since Dad died. I still 16 his voice if I imagine certain things. But even without hearing his voice, the most 17 thing is that he is still with me every day of my life. I do no have identical (相同的) 18 to him, however, I know that from him, I learned strong values. Dad taught me to value and respect money, to be 19 with it and not to want too much or be too 20 for material things … | ||||
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