Question

In: Statistics and Probability

QUESTION E The sales of a factory, manufacturing bicyles, over the last 24 months were as...

QUESTION E

The sales of a factory, manufacturing bicyles, over the last 24 months were as follows:

MONTH UNITS SOLD
1 1140
2 1180
3 1130
4 1180
5 1110
6 1200
7 1280
8 1340
9 1340
10 1240
11 1140
12 1230
13 1440
14 1530
15 1560
16 1350
17 1350
18 1420
19 1530
20 1530
21 1430
22 1430
23 1490
24 1570

It is obvious that the monthly sales are increasing, but it is also obvious to the production manager that he is getting close to his capacity. In fact, should demand exceed 1 600 units a month, the factory would have to be expanded to meet the requirements.

Investigate the possibility, by conventional forecasting methods (in other words, the moving averages) that the figure of 1 600 units will be exceeded in any of the next six months.

Solutions

Expert Solution

Hello

The excel forecasting moving averages output :

Timeline Values Moving Average Forecast Lower Confidence Bound Upper Confidence Bound
1 1140
2 1180 1160
3 1130 1155
4 1180 1155
5 1110 1145
6 1200 1155
7 1280 1240
8 1340 1310
9 1340 1340
10 1240 1290
11 1140 1190
12 1230 1185
13 1440 1335
14 1530 1485
15 1560 1545
16 1350 1455
17 1350 1350
18 1420 1385
19 1530 1475
20 1530 1530
21 1430 1480
22 1430 1430
23 1490 1460
24 1570 1530 1570 1570 1570
25 1617 1664 1542 1786
26 1699 1735 1612 1858
27 1699 1663 1539 1787
28 1649 1635 1510 1760
29 1592 1549 1423 1675
30 1593 1638 1511 1765

And the corresponding Chart: ( I recommend you to first download it and then view it.)

I hope this solves your doubt.

Do give a thumbs up if you find this helpful.


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