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Definition of dependencies: The functions defining the dependent variable W: W(X), W(X, Y), and W(X, Y, Z). The variables X, Y, and Z are the digits of a mod4 number N (depicted as a mod10 number here.) (A) W(X) and (B) W(X, Y) is shown as a function of N = X + 4Y. (C) W(X, Y, Z) is shown as a function of N = X + 4Y + 16Z.
