Function predict

docs/app/js/sanddance-app.js:119688–119688

(x)

        X2 += (dx * dx - X2) / n;
    });
    const coef = ols(X, Y, XY, X2), predict = (x)=>coef[0] + coef[1] * x;
    return {
        coef: coef,
        predict: predict,