Month	Sales
1	242
2	235
3	232
4	178
5	184
6	140
7	145
8	152
9	110
10	130
11	152
12	206
13	263
14	238
15	247
16	193
17	193
18	149
19	157
20	161
21	122
22	130
23	167
24	230
25	282
26	255
27	265
28	205
29	210
30	160
31	166
32	174
33	126
34	148
35	173
36	235

Assume that January sales for the fourth year turn out to be $295,000. a. What was your forecast error? b. If this error is large, Karen may be puzzled about the difference between your forecast and the actual sales value. What can you do to resolve her uncertainty about the forecasting procedure?