make_poly

			make_poly(coef, x; noise = 0.01, f_rand = randn) -> x, y

Generates a noisy response for a polynomial of degree length(coef) using the vector x as input and adding noise .* f_randn(length(x)) to the result. The vector coef contains the coefficients for the terms of the polynome. The first element of coef denotes the coefficient for the term with the highest degree, while the last element of coef denotes the intercept.