Let’s say there’s a 4 minute question saying “show your calculations” on Cobb-Douglas, with:
Capital stock growth = 3%
Labour input growth = 2%
output elasticity of capital = 0.3
TFP growth = 2.5%.
My answer in my practice exams is:
Change in GDP = 2.5% + 3% * 0.3 + 2% * 0.7 = 4.8%
I give myself 4 marks out of 4 for that. Should I be writing out this instead?
Change in GDP = TFP growth + Capital stock growth * output elasticity of capital + labour input growth * (1-output elasticity of capital) [in words or symbols]
Change in GDP = 2.5% + 3% * 0.3 + 2% * 0.7 = 4.8%
Thoughts?