Sample regression Model: Example =+b×1+b221+●+bxp Coefficien ts Excel Output In tercept 562.1510092 x Variable 1 -5.436580588 x Variable 2 -20.01232067 Y1=562.151-5.437X1-20.012X2 For each degree increase in temperature, the average amount of For each increase in one inch heating oil used is decreased by of insulation, the use of heating 5.437 gallons, holding insulation oil is decreased by 20.012 constant gallons, holding temperature constantSample Regression Model: Example Yi b b X i b X i bpXpi ˆ = 0 + 1 1 + 2 2 +•••+ C o efficien ts I n te r c e p t 5 6 2 . 1 5 1 0 0 9 2 X V a r i a b l e 1 -5 . 4 3 6 5 8 0 5 8 8 X V a r i a b l e 2 -2 0 . 0 1 2 3 2 0 6 7 Excel Output i i X i Y . . X . ˆ = 562 151 − 5 437 1 − 20 012 2 For each degree increase in temperature, the average amount of heating oil used is decreased by 5.437 gallons, holding insulation constant. For each increase in one inch of insulation, the use of heating oil is decreased by 20.012 gallons, holding temperature constant