10 mins: Introduction to Contro chart -Mean and Standard deviation given directly
10 mins: Types of Contro chart -Mean and Standard deviation given directly
20 mins: Problem solving based on Contro chart -Mean and Standard deviation given directly
10 mins: Discussion and Summary
1. A company collects 25 samples, each of size 5, from a production process. The average of sample means is 50 and the average of sample ranges is 4. Construct X̄ and R charts and comment on process control.
2. Twenty subgroups of size 4 have been taken from a process. The subgroup means and ranges are recorded. Using control chart constants, prepare X̄ and R charts to assess stability.