Five data entry operators work at the data processing department of the Georgia Bank. Each day for 30 days, the number of defective records in a sample of 250 records typed by these operators has been noted, as shown in the spreadsheet.

Establish the 99.73% upper and lower control limits for a p-chart.

When we apply the control limits, what would we conclude if we saw a days sample (250 records) has 21 defective records?

Question 5: Data Entry
Sampel No.	No. Defective	Sampel No.	No. Defective	Sampel No.	No. Defective
1	7	11	18	21	12
2	5	12	13	22	19
3	19	13	16	23	6
4	10	14	6	24	7
5	11	15	11	25	13
6	8	16	8	26	12
7	12	17	12	27	8
8	9	18	9	28	6
9	12	19	6	29	12
10	13	20	16	30	3