North Dakota Electric Company estimates its demand trend line (in millions of kilowatt hours) to be: D = 77.0 + 0.45Q,
where Q refers to the sequential quarter number and Q=1 for winter of Year 1. In addition, the multiplicative seasonal factors are as follows:
| Quarter | Factor (Index) |
|---|---|
| Winter | 0.72 |
| Spring | 1.25 |
| Summer | 1.45 |
| Fall | 0.58 |
In year 26 (quarters 101-104), the energy use for each of the quarters beginning with winter is (round your response to one decimal place):
| Quarter | Energy Use |
|---|---|
| Winter | |
| Spring | |
| Summer | |
| Fall |
The demand forecast will be as follows:
D = (77 + 0.45Q) x Multiplicative seasonal factor
Winter = (77+0.45 x 101) x 0.72 = 88.16 million KWH
Spring = (77+0.45 x 102) x 1.25 = 153.63 million KWH
Summer = (77+0.45 x 103) x 1.45 = 178.86 million KWH
Fall = (77+0.45 x 104) x 0.58 = 71.80 million KWH
North Dakota Electric Company estimates its demand trend line (in millions of kilowatt hours) to be: D = 77.0 + 0.45Q,