《R数据分析-简版电子书》.pdf

ANSYS 疑难问题 问答若干例 来问作者 m ’ o c . g n a b o a i l i h z w. w w m o c g. n a b o a i l i h z . w w w m o c . g n a b o a i l i h z . w w w t m o c . g n a b o a i l i h z w. w w 2 m o c . g n a b o a i l i h z F w. w w m o c . g n a b o a i l i h z w. w w 1 m o c g. n a b o a i l i h z w. w w m o c g. n a b o a i l i h ’ z . w w w m o c g. n a b o a i l i h z . w w w m o c g. n a b o a i l i h z . w w w m o c g. n a b o a i l i h z w. w w m o c g. n a b o a i l i h z w. w w runif n, min 0, max 1 runif 3,1,3 # 3 [1,3] [1] 1.204 1.359 2.653 runif 5 # 5 [0,1] [1] 0.2784 0.7755 0.4107 0.8392 0.7455 219937 1 RNGkind kind Wich set.seed 1 # runif 5 m o [1] 0.座机电话号码 0.座机电话号码 0.座机电话号码 0.座机电话号码 0.座机电话号码 c g. n a b o Nsim 10^3 a i x runif Nsim l x1 x[-Nsim] # i h x2 x[-1] #z par mfrow c 1,3 w. w hist x,prob T,col gray 0.3 ,main uniform on [0,1] # w curve dunif x,0,1 ,add T,col red # plot x1,x2,col red acf x # U U [0,1] 1 2 X 2log U cos 2U X 2log U sin 2U 1 1 2 2 1 2 N 0,1 N n m o c g. n a b o rnorm 5,10,5 # 5 10 5a i [1] 3.172 14.705 7.173 5.842 8.879 l rnorm 5 # 5 i h [1] -0.58204 0.04606 0.96016 -0.68698 -0.35504 z w. w w x rnorm 100 hist x,prob T,main normal mu 0,sigma 1 # curve dnorm x ,add T # x x n x rexp 100,1/10 # 100 10 hist x,prob T,col gray 0.9 ,main 10 curve dexp x,1/10 ,add T # m o c g. n a b o a i l i h z w. w w X ~ Exp 1 Nsim 10^4 U runif Nsim X -log U Y rexp Nsim par mfrow c 1,2 hist X,freq F,main Exp from Uniform curve dexp x,1 ,add T,col red hist Y,freq F,main Exp from R curve dexp x,1 ,add T,col red Exp from UniformExp from Uni Exp from R Exp from R 6 . 6 0 . 0 5 . 5 0 . 0 4. 4 y y . t 0 t i i 0 s s n n e 3 e 3 . D D . 0 0 2 2 . . 0 0 1 1 . . 0 0 0 0 . . 0 0 0 2 4 6 8 10 0 2 4 6 8 12m X Y o c . g n X ~Exp 1 a b o a i l i X P X x p h 0 p i P X x i i iz1, 2,p P X 0 0 i w. i w p ,i 1,2, r [0,1] w j j 1 p i1 r p i X xi P p i1 r p i P X x p i p i1 p i 1,