Students must understand that: $$\textTotal Change in National Income = k \times \textInitial Injection$$ A common error is calculating $k$ but failing to multiply it by the initial change in government spending or investment to find the final change in GDP.

The student must interpret the sign (+/-) as rigorously as the magnitude.

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Ib Economics Hl Formula Booklet

Students must understand that: $$\textTotal Change in National Income = k \times \textInitial Injection$$ A common error is calculating $k$ but failing to multiply it by the initial change in government spending or investment to find the final change in GDP.

The student must interpret the sign (+/-) as rigorously as the magnitude. ib economics hl formula booklet

Do you have a specific or formula from the booklet that you’re currently struggling to apply? ib economics hl formula booklet

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