All functionality from Statistics`LinearRegression` is available in the built-in Mathematica kernel.
NFourierSeries[expr, t, n] gives a numerical approximation to the order n Fourier exponential series expansion of expr, where expr is a periodic function of t with period 2 ...
NFourierTrigSeries[expr, t, k] gives a numerical approximation to the order n Fourier trigonometric series expansion of expr, where expr is a periodic function of t with ...
AdjacencyMatrix[g] gives the SparseArray object representing the graph g.AdjacencyMatrix[g, n] gives the SparseArray object representing the graph g, adding additional ...
PrimeQCertificate[n] gives a certificate that n is prime or that n is composite.
CholeskyDecomposition[m] gives the Cholesky decomposition of a matrix m.
ClosenessCentrality[g] gives a list of closeness centralities for the vertices in the graph g.
CMYKColor[cyan, magenta, yellow, black] is a graphics directive which specifies that graphical objects which follow are to be displayed in the color given. CMYKColor[c, m, y, ...
DatePlus[date, n] gives the date n days after date.DatePlus[date, {n, " unit"}] gives the date n units after date.DatePlus[date, {{n_1, "unit_1"}, {n_2, "unit_2"}, ...}] ...