Renault, Eric; Triacca, Umberto - In: Statistics & Probability Letters 99 (2015) C, pp. 1-5
Following Wold (1954), a causal relationship from a vector y of economic variables towards a vector x should be interpreted through a fictive controlled experiment. At least one factor y(i) component of y should have an impact on x when other factors y(j), j≠i, are kept constant. It is...