Quarterly sales revenue (in $million) for a particular company has been modelled using linear regression with indicator variables:
Y = 132 + 2Q₁ + 3Q₂ - 5Q₄ + 2t
Where t is time in quarters, with origin March 2006 and Q₁, Q₂ and Q₄ are the indicator variables for March, June and December quarters, respectively.
Describe the trend and seasonal effects.

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The Answer of Quarterly sales revenue (in $million) for a particular company has been modelled using linear regression with indicator variables:
Y = 132 + 2Q₁ + 3Q₂ - 5Q₄ + 2t
Where t is time in quarters, with origin March 2006 and Q₁, Q₂ and Q₄ are the indicator variables for March, June and December quarters, respectively.
Describe the trend and seasonal effects.

Quarterly Sales Revenue (In $Million) for a Particular Company Has