Transcription of 標準偏差と標準誤差 ... - acs.dis.titech.ac.jp
1 [1, 2] . 1 . standard deviation .. (Xi X). 2. V =. (N 1).. S D = V. Xi i X N .. X X .. median % [1] .. N . X 2S D 95% . *1 . *1 X 2S D 95% . 1.. 1) *2 *3 . N(X, 2 ) . N(X, 2 ) .. 1 X 2S D 1. 6 . 1. 2 .. N(X, 2 ) N(X, 2 ) . 2S D. 2 N(X, 2 )dx = *4. X . X 2S D 95% .. 2 .. N . SD. S E = . N.. 2 . *2 . *3 X V = 2 S D = N(X, 2 ) . *4 X D . 2.. 2 .. X . *5 . X X .. *6 .. 20 i . Xi n X . X1 + X2 + X3 + + Xn X =. n n .. n(X ). Zn =.. N(0, 1) *7 . n X X Zn1 . n Zn2 n m . Zn1 , Zn2 , .., Znm Zn Zn X . X X X . X X .. x = 2 x = 2 . 2. N(0, 1)dx > 2. *5 X .. [2] . *6 . *7 .. 3. Zn -2 2 . n(X ). 2 < <2. 0.. 2 0 2 0. X < < X + . n n X 2 0.. n X + 2 0.. n 95% .. S E = . n . 95% X 2S E *8 .. 3 .. X 2S D 95% .. X 2S E 95% .. [1] 1999 . [2] ,2005 . *8 0 20 S E . 2 20 2 . 2 20 . 20 2 . 4.
