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The Official Journal of the Pan-Pacific Association of Input-Output Studies (PAPAIOS)

Table 6 Fitting polynomials for the curves of aggregate effect and diffusion.

From: Strategic sectors and the diffusion of the effect of a shock in Mexico for 2008 and 2012

  

Degree 2

Degree 3

2008

 

Polynomial

p(x) = −0.607x2 + 2.442x − 1.765

p(x) = 0.589x3 − 3.416x2 + 6.809x − 3.978

 

Residuals

residuals = 0.200

residuals = 0.138

 

R-squared

r2 = 0.957

r2 = 0.971

2012

 

Polynomial

p(x) = −0.646x2 + 2.560x − 1.856

p(x) = 0.698x3 − 3.882x2 + 7.454x − 4.269

 

Residuals

residuals = 0.268

residuals = 0.200

 

R-squared

r2 = 0.948

r2 = 0.961

  1. Numbers before the x are the coefficients of the polynomial and the variable x stands for the independent variable, in this case aggregate effect
  2. Spearman correlation coefficients matrix