The regression trend line for annual energy consumption for 1985-2005 is given by ŷ_t = 70 + 0.53t, where t = 1 for 1985. If the annual energy consumption for 2000 was 82.5, then the percentage of trend for 2000 was: A) 105.122%. B) 95.127%. C) 104.321%. D) 98.462%.

Question

Quizplus · Accepted Answer

The trend value for 2000 (t = 16) is ŷ₁₆ = 70 + 0.53(16) = 78.48. The percentage of trend is (82.5 / 78.48) * 100 = 105.122%.

The Regression Trend Line for Annual Energy Consumption for 1985-2005