Statistics & Probabilities Intro
March 29, 2018
A random vibration signal seems hard to describe quantitatively. Just answering the question, “How big is it?” is challenging. This section covers some of the ways random signals are quantified, including statistical measures (such as the mean value) and probability distributions (such as the normal curve). The course also covers product design applications, such as tolerances and fatigue analysis.
In this section, it is assumed that a continuous vibration signal, x(t), has been digitized into a sequence of numbers, xn, n = 1, …, N, used for the analysis.