Coal shipments from a mine for the past 18 weeks are:

Week	Tonnes Shipped
1	403
2	406
3	412
4	415
5	420
6	424
7	430
8	435
9	438
10	444
11	447
12	455
13	459
14	462
15	465
16	469
17	473
18	479

a-1.Select the correct chart showing plotted data as time series.

Chart A	Chart B	Chart C

(Click to select) Chart A Chart B Chart C

a-2.Determine the pattern and explain why an averaging technique would not be appropriate in this case. There is a (Click to select) long-term upward long-term downward trend in the data. The averaging technique forecasts willconsistently (Click to select) underestimate overestimate the data.

b.Use an appropriate technique to develop a forecast for week 19.(Round the final answer to 2 decimal places.) Forecast for week 19