Answer the given question of Total Quality Management.
A manufacturing plant make wind mill assemblies & can produce 50 units in a month in two period of 15 days each ; following is the data for number of defects arising per month.
|
Month
|
Jan
|
Feb
|
Mar
|
Apr
|
MAy
|
Jun
|
July
|
Aug
|
Sept
|
Oct
|
Nov
|
Dec
|
|
No. of defects per period
|
4
|
3
|
1
|
4
|
6
|
7
|
9
|
5
|
2
|
0
|
2
|
4
|
|
|
3
|
2
|
0
|
5
|
7
|
7
|
6
|
4
|
3
|
2
|
3
|
3
|
• which control chart should be used for the above data and why?
• Make the appropriate control chart on a graph paper.
• interpret the chart and give your recommendation. Whether the process is in control or not?