! Glen Cowan, Exercises in Statistical Data Analysis ! ! Data from E. Rutherford and H. Geiger, "The probability variations ! in the distribution of alpha particles", Philosophical Magazine, ! ser. 6, XX, 698-707. ! ! number of number of observed ! decays n in 7.5 s intervals with n ! intervals decays ! 0 57 1 203 2 383 3 525 4 532 5 408 6 273 7 139 8 45 9 27 10 10 11 4 12 0 13 1 14 1