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Unformatted text preview: اﻟﻨﺘﺎﺋﺞ اﻟﻤﺠﺪوﻟﺔ أدﻧﺎﻩ.‬ ‫اﻟﻤﻄﻠﻮب : ﻋﻦ ﻃﺮیﻖ ﺧﺮیﻄﺔ اﻟﺘﺤﻜﻢ ﻟﻌﺪد اﻟﻌﻴﻮب ادرس‬ ‫اﺳﺘﻘﺮار اﻟﻌﻤﻠﻴﺔ اﻟﺘﺼﻨﻴﻌﻴﺔ ﻟﻠﺸﺮآﺔ )هﻞ ﻧﻈﺎم اﻟﺘﺼﻨﻴﻊ ﻣﻨﻀﺒﻂ‬ ‫)اﺡﺴﺐ ب: 2 = ‪(z‬‬ ‫اﺡﺼﺎﺋﻴﺎ أم ﻻ ؟(‬ ‫5‬ ‫42‬ ‫٢١‬ ‫٦‬ ‫4‬ ‫3‬ ‫2‬ ‫1‬ ‫اﻟﻠﻔﺔ‬ ‫22‬ ‫71‬ ‫12‬ ‫61‬ ‫ﻋﺪد اﻟﻌﻴﻮب‬ ‫‪c Chart‬‬ ‫ﺣﺴﺎب ﺣﺪود اﻟﻀﺒﻂ‬ ‫‪Control Limits‬‬ ‫ﻣﺘﻮﺳﻂ ﻋﺪد اﻟﻌﻴﻮب ﻓﻲ آﻞ اﻟﻮﺡﺪات‬ ‫02 = 5 / )42+22+71+12+61( = ‪c‬‬ ‫02 = ‪c‬‬ ‫2=‪z‬‬ ‫اﻟﺤﺪ اﻷﻋﻠﻰ ﻟﻠﻀﺒﻂ‬ ‫‪Upper Control Limit‬‬ ‫49.82 = ‪UCLc = c + z c‬‬ ‫اﻟﺤﺪ اﻷدﻧﻰ ﻟﻠﻀﺒﻂ‬ ‫60.11 = ‪c‬‬ ‫‪Lower Control Limit‬‬ ‫‪LCLc = c – z‬‬ ‫٣١‬ ‫رﺱﻢ ﺥﺮﻳﻄﺔ ﻋﺪد اﻟﻌﻴﻮب‬ ‫‪c chart‬‬ ‫ﻋﺪد اﻟﻌﻴﻮب‬ ‫رﻗﻢ اﻟﻌﻴﻨﺔ )اﻟﻠﻔﺔ(‬ ‫٤١‬ ‫٧‬ ‫ﺕﺪرﻳﺐ ١ – ﺣﺎﻟﺔ دراﺱﻴﺔ ﻋﻦ ﺏﻨﻚ‬ Construction of p chart Example 1 Sample Number Wrong Account Number 1 2 3 4 5 6 7 8 9 10 11 12 15 12 19 2 19 4 24 7 10 17 15 3 The operations manager of the booking services department of Hometown Bank is concerned about the number of wrong customer account numbers recorded by Hometown personnel. Each week a random sample of 2,500 deposits is taken, and the number of incorrect account numbers is recorded. The records for the past 12 weeks are shown in the following table. Is the process out of control? (Use 3-sigma control limits.) ١٥ ٢ ‫ﺕﺪرﻳﺐ‬ Construction of c chart Example 2 Surface defects have been counted on 25 rectangular steel plates, and the data are shown in the table. Construct a c control chart for nonconformities using this data to study if the process is under control Plate No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 No. of Nonconformities 1 0 4 3 1 2 5 0 2 1 1 0 8 0 2 1 3 5 4 6 3 1 0 2 4 ٨ ‫ﺟﺰاآﻢ اﷲ ﺥﻴﺮا ﻋﻠﻰ ﺣﺴﻦ اﻻﺱﺘﻤﺎع‬ ‫هﻞ ﻡﻦ أﺱﺌﻠﺔ ؟‬ ‫٠٠٠٢‬ ‫٧١‬ ‫٩‬...
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This document was uploaded on 09/27/2013.

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