GDP in the USA between 1960 and 2001

Choose Quadratic fit from the pull-down menu to fit a quadratic model to the data. Observe that the residuals are now smaller — the fitted GDPs are closer to the actual GDPs than with a linear model.

This data set shows how GDP has increased in the USA since 1960. The GDP has been measured in billion US dollars, corrected for inflation by expressing it in terms of 1996 dollars.