However, a terminological difference arises in the expression mean squared error (MSE). The mean squared error of a regression is a number computed from the sum of squares of the computed residuals, and not of the unobservable errors. If that sum of squares is divided by n, the number of observations, the result is the mean of the squared residuals.
Heisenberg Uncertainty Principle. Heisenberg, a German scientist stated the principle of uncertainty which is a consequence of dual nature of matter and waves. The Heisenberg uncertainty principle states that it is impossible to find the position and momentum (velocity) of an electron at the same moment. Mathematical representation of this is as follows: \( \triangle x Ã \triangle v_x \geq \frac{h}{4\pi m}\)
Executive summary: Heisenberg Uncertainty Principle German physicist Werner Heisenberg studied under Max Born, David Hilbert, and Arnold Sommerfeld, and won the Nobel Prize for Physics in 1932. His 1925 theory of quantum mechanics offered a matrix method to explain stationary discrete energy states, and was soon superseded by Erwin SchrÃ¶dinger's more intuitive wave equation.