A software development firm takes a sample of the code written each day and determines the number of errors in the sampled lines of code. The number of errors is shown in the table. Use an appropriate control chart to determine if the coding process is in control.
| Day | No. of Errors in Code Samble |
|---|---|
| 1 | 23 |
| 2 | 22 |
| 3 | 8 |
| 4 | 18 |
| 5 | 12 |
| 6 | 26 |
| 7 | 17 |
| 8 | 35 |
| 9 | 18 |