In: Accounting
The employees in an insurance company's mailroom are responsible
for sorting and delivering the incoming U.S. mail to the correct
departments. These employees have been receiving numerous
complaints that mail is being delivering to the wrong departments.
To better understand these complaints, the mailroom employees
recorded the number of these complaints they received each day for
the last 20 working days (Monday through Friday for the last 4
weeks). The data, in the order of the last 20 working days, is
given below.
Week 1 Week 2 Week 3 Week 4 Monday 13 Monday 12 Monday 12 Monday 12
Tuesday 5 Tuesday 6 Tuesday 5 Tuesday 4 Wednesday 14 Wednesday 12
Wednesday 12 Wednesday 9 Thursday 11 Thursday 11 Thursday 9
Thursday 15 Friday 9 Friday 15 Friday 10 Friday 9
Plot these data on a run chart. What conclusion can you make about
the number of complaints received over the last 4 weeks?
Week |
Day |
Day Number |
Complaints |
1 |
Mon |
1 |
13 |
1 |
Tue |
2 |
5 |
1 |
wed |
3 |
14 |
1 |
Thus |
4 |
11 |
1 |
Fri |
5 |
9 |
2 |
Mon |
6 |
12 |
2 |
Tue |
7 |
6 |
2 |
wed |
8 |
12 |
2 |
Thus |
9 |
11 |
2 |
Fri |
10 |
15 |
3 |
Mon |
11 |
12 |
3 |
Tue |
12 |
5 |
3 |
wed |
13 |
12 |
3 |
Thus |
14 |
9 |
3 |
Fri |
15 |
10 |
4 |
Mon |
16 |
12 |
4 |
Tue |
17 |
4 |
4 |
wed |
18 |
9 |
4 |
Thus |
19 |
15 |
4 |
Fri |
20 |
9 |
As shown in run chart, the number of complaints received on every Tuesday is low and for the rest of days in a week it is fairly constant. The employees working on Tuesday are more efficient than the rest of days in a week. Thus, study and analysis the sorting and delivering process during the Tuesday and replicate the process for remaining days of week.
Number of Compliants 16 14 10 6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Days in week
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