1. Surface defects have been counted on 25 rectangular steel plates, and the data are shown in Table below. Set up a control chart for nonconformities using these data. Does the process producing the plates appear to be in statistical control based on the trial control limits. Describe in words how to establish a revised control chart.

Plate Number	Number of Nonconformities	Plate Number	Number of Nonconformities
1	1	14	0
2	0	15	2
3	4	16	1
4	3	17	3
5	1	18	5
6	2	19	4
7	5	20	6
8	0	21	3
9	2	22	1
10	1	23	0
11	1	24	2
12	0	25	4
13	8