Ouvrage (auteur).This book presents a large variety of applications of probability theory and statistics in computer science but we do not cover all domains of application. We focus mostly on: Probabilistic algorithm analysis: starting with the Quicksort algorithm, we switch to A.T.~Jonassen and D.E.Knuth's famous trivial dynamic algorithm whose analysis isn't. Then we lay out the basics of the probabilistic analysis of dynamic data structures. We illustrate with G.~Louchard's method applied to the linear list, then present R.~Maier's powerful large deviation analysis. Binary search trees have been deeply investigated over the last decade. We present a nice result on the width obtained by B.~ Chauvin, M.~ Drmota and J.~Jabbour-Hattab throug...