As shown: For the data in the table below (the same as the previous problem), fi

Question

As shown:

For the data in the table below (the same as the previous problem), find the least square quadratic polynomial approximation. 'Let y denote the debt per capita (in thousand dollars) for the year x. Round your coefficients to four decimal places.) y = Compare this model with the linear model (obtained from the previous problem) by computing the root mean square error in each case. (Round your answers to four significant figures.) The root mean square error is defined as: where the yi's and Yi's are the approximated values and the actual data points. error in the linear model error in the quadratic model

Explanation / Answer

y = 1.454545455

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