Answer to Question #270748 in Management for Ana F pouhila

Question

A production analyst takes 12 samples of jelly beans from production over a shift period. The number of minor defects in each sample is shown below.

 

Sample

Number of defects

1

6

2

6

3

5

4

8

5

6

6

5

7

5

8

3

9

7

10

3

11

4

12

6

 

Develop the appropriate control chart for this process. Does the process appear to be in control? Why? (6 marks)

Answer 1

The control chart is a graph that is used to investigate how a process evolves over time. The data is shown in chronological sequence. If a process is statistically controlled, it is considered to be in control or stable. Because all unique causes of variation have been eliminated and only common cause variation remains, this procedure is statistically controlled. Even if a process is under control, it may fail to match the specifications.