BAMG4201 – Production and Operations Management


BAMG4201 – Production and Operations Management




The assignment covers outcomes three of the course. After completion of the assignment the students will be able to :

  1. Apply technique of Control Chart for Variables to measure quality control.
  2. Apply technique of Control Chart for Attributes to measure quality control.



Problem 1




Problem 2


Draw the relevant control chart and comment whether the process is under control.

Assume values of constants A2 – 0.58, D3 – 0, D4 – 2.11



Problem 3



Problem 4


The following data refer to defectives found at inspection of the first 10 samples of size 100. Use the data to obtain upper and lower control’ limits for percentage defective in samples of 100.

Represent the first ten sample results in the chart you prepare to show the central line and control limits:




Problem 5






Problem 6


The following are the inspection results of 20 lots of magnets. Each lot being 750. The no. of defective magnets are given below.


Construct a suitable chart and state whether the process is in control or not.



Problem 7


Lots of pushing resews from a single supplier where 100% inspection is done and the results are as follows.


Draw an appropriate control chart and offer your comment on behaviour of the process.


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