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Q31. A customer comment phone line is staffed from 8:00 a.m. to 4:30 p.m. five days...

Q31. A customer comment phone line is staffed from 8:00 a.m. to 4:30 p.m. five days a week. Records are available that show the number of calls received every day for the last five weeks. Excel Data can be found in Data Tab/Sheet

a. Show a time series data plot of data and describe your observation in terms of pattern, trend, etc.

b. Use a dummy variable method forecasting method to produce Week 6’s Daily and total calls for Week 6.

Week Day Number of Calls
1 M 31
T 15
W 19
TH 18
F 26
2 M 28
T 13
W 17
TH 17
F 29
3 M 35
T 18
W 18
TH 16
F 24
4 M 30
T 16
W 19
TH 21
F 27
5 M 29
T 14
W 21
TH 20
F 28

Solutions

Expert Solution

Data Table

Ans-(a)

Observations:

  • Peaks happen mostly on first day of the week that is Monday
  • First three days there is declining trend
  • Last two days of the week again there is upward trend

Ans-(b)

Data table for Forecast

Data Forecast setting in excel

Daily Forecasted Calls for week - 6

5 week actual plus 6th week forecast chart:

ekkarill92 answered 3 years ago
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