A commercial bakery has recorded sales (in dozens) for three products, as shown below:
Day Blueberry Cinnamon Cupcakes
Muffins Buns
1 30 18 45
2 34 17 26
3 32 19 27
4 34 19 23
5 35 22 22
6 30 23 48
7 34 23 29
8 36 25 20
9 29 24 14
10 31 26 18
11 35 27 47
12 31 28 26
13 37 29 27
14 34 31 24
15 33 33 22
a. Predict orders for the following day for each of the products using an appropriate naïve method.
(Hint: Plot each data set).
b. What should the use of sales data instead of demand imply?