042-Fundamentals-of-Physics-II-Electromagnetism-Optics-and-Quantum-Mechanics-R.-Shankar-Edisi-1-2016 · Problem 20.1

The Wave Function and Its Interpretation

Physics — Shankar · mean-of-deviations

Problem

Show that the average of the deviations

v_i - \langle v \rangle

will be zero, where the average is taken with respect to the normalized probability distribution

P(i)