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The Economic Statistics Bureau has recorded the number of company liquidations over 27 time periods as follows:
Period
Liquidations
1
246
10
273
19
234
2
243
11
284
20
162
3
269
12
305
21
240
4
357
13
293
22
298
5
163
14
348
23
264
6
154
15
423
24
253
7
109
16
291
25
8
17
320
26
302
9
222
18
27
188
(a) Use Excel to compute both a three-period and a five-period moving average time series of company liquidations.
(b) Plot the original time series of company liquidations and the three-period and five-period moving average values on the same graph. Use Excel's Line graph option in the Insert > Chart tab.
(c) Comment on the pattern of company liquidations over this time period.
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