# Welsh Gas is one of the largest utility companies in Wales. The company gathered quarterly data...

###### Question:

Welsh Gas is one of the largest utility companies in Wales. The company gathered quarterly data for the demand of Gas (in 100,000 cubic feet), reported in the following table Demand Quarterfor Gas Time Year 1481 1241 948 1286 1616 1361 975 1211 1755 1511 1132 1575 1965 1181 10 12 13 14 15 16 (a) The linear regression model (without seasonal adjustment) of the Demand of Gas on Time is as followS Gas= 1217.55 + 20.90 Time with R2-0.0894 and significance levels of. QUESTION CONTINUED IN THE NEXT PAGE Standard Coefficients Errort Stat P-value Intercept 1217.555 163.9284 7.427359 7.97E-06 Time 20.90934 19.25241 1.086063 0.298787 Use the ratio-to-trend method to forecast the Demand of Gas for the next two quarters (i.e., for quarters 3 and 4 ofyear 4)

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