Consider the quarterly demand levels for electricity (1000 megawatts) in Polokwane from 2015 to 2018. Quarter 2015 2016 2017 2018 Jan - March 21 35 39 78 Apr-June 42 54 82 114 July-Sept 60 136 160 Oct-Dec 12 14 28 40 Using the third period moving average Determine the centered moving average of period 15

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Consider the quarterly demand levels for electricity (1000 megawatts) in Polokwane from 2015 to 2018.
Quarter
2015
2016
2017
2018
Jan March
21
35
39
78
Apr-June
42
54
82
114
July-Sept
60
91
136
160
Oct-Dec
12
14
40
Using the third period moving average
Determine the centered moving average of period 15
O a) 80 667
O b) 73.333
Oc) 117.333
O di 104.667
Transcribed Image Text:Consider the quarterly demand levels for electricity (1000 megawatts) in Polokwane from 2015 to 2018. Quarter 2015 2016 2017 2018 Jan March 21 35 39 78 Apr-June 42 54 82 114 July-Sept 60 91 136 160 Oct-Dec 12 14 40 Using the third period moving average Determine the centered moving average of period 15 O a) 80 667 O b) 73.333 Oc) 117.333 O di 104.667
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