The marketing department of a large organization is interested in being responsive to its customers' needs. Accordingly, each week it monitors the number of complaints received.
It is possible for a customer to have more than one complaint. Table shows the feedback from its customers. Construct an appropriate control chart and comment on the level of customer service by the organization.
| TABLE : Customer Complaints in an Organization |
| Sample |
Number Responded |
Number of Complaints |
Sample |
Number Responded |
Number of Complaints |
| 1 |
75 |
8 |
14 |
90 |
10 |
| 2 |
120 |
12 |
15 |
145 |
18 |
| 3 |
110 |
6 |
16 |
150 |
20 |
| 4 |
135 |
15 |
17 |
124 |
16 |
| 5 |
150 |
12 |
18 |
108 |
12 |
| 6 |
175 |
28 |
19 |
115 |
15 |
| 7 |
80 |
11 |
20 |
88 |
12 |
| 8 |
70 |
14 |
21 |
92 |
14 |
| 9 |
130 |
20 |
22 |
95 |
15 |
| 10 |
105 |
10 |
23 |
120 |
18 |
| 11 |
118 |
26 |
24 |
135 |
6 |
| 12 |
130 |
18 |
25 |
130 |
5 |
| 13 |
125 |
16 |
|
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