Should we report a ratio of averages (RA) or an average of ratios (AR)? The answer depends on what we want to average and how. By definition, things that are not additive cannot be averaged in the …
If A is a 3×3 matrix with eigenvalues 2, 3, 5, and B is its inverse matrix. Then: Trace of A is 2 + 3 + 5 = 10. Determinant of A is (2)(3)(5) = 30. Trace of B is 1/2 + 1/3 + 1/5 = 1.033… Deter…
In a previous post, I explained how I installed an IIS web server on my brand new Windows 11 computer.( Another thing I installed was Whois. The term whois refers to both a protocol and network too…
