{"id":8711,"date":"2026-03-22T17:20:38","date_gmt":"2026-03-22T08:20:38","guid":{"rendered":"https:\/\/now0930.pe.kr\/wordpress\/?p=8711"},"modified":"2026-10-04T11:38:50","modified_gmt":"2026-10-04T02:38:50","slug":"%ec%98%a4%ec%b0%a8%eb%b6%84%ec%84%9d%ec%9e%85%eb%ac%b8-%ec%a0%95%eb%a6%ac2","status":"publish","type":"post","link":"https:\/\/now0930.pe.kr\/wordpress\/%ec%98%a4%ec%b0%a8%eb%b6%84%ec%84%9d%ec%9e%85%eb%ac%b8-%ec%a0%95%eb%a6%ac2\/","title":{"rendered":"\uc624\ucc28\ubd84\uc11d\uc785\ubb38 \uc815\ub9ac2"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\n\n

\uc624\ucc28\ubd84\uc11d\uc785\ubb38 \uc815\ub9ac2<\/h1>\n\n
\n Weighted Average \u00b7 Weight \u00b7 Standard Deviation \u00b7 Least Square \u00b7 Linear Fitting \u00b7 \u03c7\u00b2\n <\/div>\n\n\n \n

1. \uc11c\ub85c \ub2e4\ub978 \ubd88\ud655\uc2e4\uc131\uc744 \uac00\uc9c4 \uce21\uc815\uac12<\/h2>\n\n
\n\n

\n \uc774\ubbf8\uc9c0\uc5d0\uc11c\ub294 \uc11c\ub85c \ub2e4\ub978 \ubd84\ud3ec\ub97c \uac00\uc9c4\n \ub450 \uce21\uc815\uac12\uc744 \ud558\ub098\uc758 \uac12\uc73c\ub85c \ud3c9\uade0\ud560 \ub54c\n \uac01 \uce21\uc815\uac12\uc758 \ubd88\ud655\uc2e4\uc131\uc744 \uace0\ub824\ud55c\ub2e4.\n <\/p>\n\n

\n \uce21\uc815\uac12\uc744 xA<\/sub>, xB<\/sub>,\n \uac01\uac01\uc758 \ud45c\uc900\ud3b8\ucc28\ub97c\n \u03c3A<\/sub>, \u03c3B<\/sub>\ub85c \ub450\uace0\n \u03c7\u00b2 \ud615\ud0dc\ub85c \ub098\ud0c0\ub0b8\ub2e4.\n <\/p>\n\n

\n \u03c7\u00b2\n =\n (\n (xA<\/sub>-x) \/ \u03c3A<\/sub>\n )\u00b2\n +\n (\n (xB<\/sub>-x) \/ \u03c3B<\/sub>\n )\u00b2\n <\/div>\n\n <\/div>\n\n\n \n

2. \u03c7\u00b2\uac00 \uac00\uc7a5 \uc791\uc740 x<\/h2>\n\n
\n\n

\n \ub450 \uce21\uc815\uac12\uc744 \ub300\ud45c\ud558\ub294 x\ub294\n \u03c7\u00b2\uac00 \uac00\uc7a5 \uc791\uc544\uc9c0\ub294 \uac12\uc73c\ub85c \uad6c\ud55c\ub2e4.\n <\/p>\n\n

\n d\u03c7\u00b2 \/ dx = 0\n <\/div>\n\n

\n \uc774\ubbf8\uc9c0\uc5d0\uc11c\ub294 \uc774\ub97c \uc815\ub9ac\ud558\uc5ec\n \ub2e4\uc74c \uc2dd\uc744 \uae30\ub85d\ud55c\ub2e4.\n <\/p>\n\n

\n x\n =\n [\n xA<\/sub>\/\u03c3A<\/sub>\u00b2\n +\n xB<\/sub>\/\u03c3B<\/sub>\u00b2\n ]\n \/\n [\n 1\/\u03c3A<\/sub>\u00b2\n +\n 1\/\u03c3B<\/sub>\u00b2\n ]\n <\/div>\n\n <\/div>\n\n\n \n

3. Weight \uc815\uc758<\/h2>\n\n
\n\n

\n \uac01 \uce21\uc815\uac12\uc758 Weight\ub294\n \ud45c\uc900\ud3b8\ucc28\uc758 \uc81c\uacf1\uc5d0 \ubc18\ube44\ub840\ud558\ub3c4\ub85d \uc815\uc758\ud55c\ub2e4.\n <\/p>\n\n

\n wA<\/sub>\n =\n 1 \/ \u03c3A<\/sub>\u00b2\n <\/div>\n\n
\n wB<\/sub>\n =\n 1 \/ \u03c3B<\/sub>\u00b2\n <\/div>\n\n

\n \uc774\ub97c \uc774\uc6a9\ud558\uba74\n \ub450 \uce21\uc815\uac12\uc758 Weighted Average\ub97c\n \ub2e4\uc74c\uacfc \uac19\uc774 \ud45c\ud604\ud55c\ub2e4.\n <\/p>\n\n

\n xwav<\/sub>\n =\n (\n wA<\/sub>xA<\/sub>\n +\n wB<\/sub>xB<\/sub>\n )\n \/\n (\n wA<\/sub>\n +\n wB<\/sub>\n )\n <\/div>\n\n <\/div>\n\n\n \n

4. \ud45c\uc900\ud3b8\ucc28\uc640 Weight\uc758 \uad00\uacc4<\/h2>\n\n
\n\n

\n \uc774\ubbf8\uc9c0\uc5d0\uc11c\ub294 \ud45c\uc900\ud3b8\ucc28\uac00 \ucee4\uc9c8\uc218\ub85d\n Weight\uac00 \uc791\uc544\uc9c0\ub294 \uad00\uacc4\ub97c \uac15\uc870\ud55c\ub2e4.\n <\/p>\n\n

\n \u03c3 \u2191\n \u2192\n w = 1\/\u03c3\u00b2 \u2193\n <\/div>\n\n
\n \u03c3 \u2193\n \u2192\n w \u2191\n <\/div>\n\n
\n \n \u03c3\uac00 \ud070 \uce21\uc815\uac12\uc740 Weight\uac00 \uc791\uc544\uc838\n \ucd5c\uc885 \ud3c9\uade0\uac12\uc5d0 \ubbf8\uce58\ub294 \uc601\ud5a5\uc774 \uc791\uc544\uc9c4\ub2e4.\n <\/strong>\n <\/div>\n\n <\/div>\n\n\n \n

5. \ub450 \uce21\uc815\uac12\uc758 \u03c3\uac00 \uac19\uc740 \uacbd\uc6b0<\/h2>\n\n
\n\n

\n \u03c3A<\/sub>\uc640 \u03c3B<\/sub>\uac00 \uac19\uc73c\uba74\n \ub450 Weight\ub3c4 \uac19\uc544\uc9c4\ub2e4.\n <\/p>\n\n

\n \u03c3A<\/sub>\n =\n \u03c3B<\/sub>\n \u2192\n wA<\/sub>\n =\n wB<\/sub>\n <\/div>\n\n

\n \uc774 \uacbd\uc6b0\uc5d0\ub294 \uc77c\ubc18\uc801\uc778 \uc0b0\uc220\ud3c9\uade0\uacfc \uac19\uc740 \ud615\ud0dc\uac00 \ub41c\ub2e4.\n <\/p>\n\n

\n xwav<\/sub>\n =\n (\n xA<\/sub>\n +\n xB<\/sub>\n ) \/ 2\n <\/div>\n\n <\/div>\n\n\n \n

6. \uc5ec\ub7ec \uce21\uc815\uac12\uc758 Weighted Average<\/h2>\n\n
\n\n

\n \uc5ec\ub7ec \uac1c\uc758 \uce21\uc815\uac12\uc73c\ub85c \ud655\uc7a5\ud558\uba74\n Weighted Average\ub97c \ub2e4\uc74c\uacfc \uac19\uc774 \uae30\ub85d\ud55c\ub2e4.\n <\/p>\n\n

\n xwav<\/sub>\n =\n \u03a3 wi<\/sub>xi<\/sub>\n \/\n \u03a3 wi<\/sub>\n <\/div>\n\n
\n wi<\/sub>\n =\n 1 \/ \u03c3i<\/sub>\u00b2\n <\/div>\n\n <\/div>\n\n\n \n

7. Weighted Average\uc758 \ud45c\uc900\ud3b8\ucc28<\/h2>\n\n
\n\n

\n \ub450 \ubc88\uc9f8 \uc774\ubbf8\uc9c0\uc5d0\uc11c\ub294\n Weighted Average\uc758 \ud45c\uc900\ud3b8\ucc28 \uad00\uacc4\ub97c \uae30\ub85d\ud55c\ub2e4.\n <\/p>\n\n

\n \u03c3wav<\/sub>\n =\n 1 \/ \u221a(\u03a3wi<\/sub>)\n <\/div>\n\n

\n \ub610\ud55c Weight\uc640 \uac01 \uce21\uc815\uac12\uc758 \ud45c\uc900\ud3b8\ucc28 \uc0ac\uc774\ub97c\n \ub2e4\uc74c\uacfc \uac19\uc774 \uc5f0\uacb0\ud55c\ub2e4.\n <\/p>\n\n

\n \u03c3i<\/sub>\n =\n 1 \/ \u221awi<\/sub>\n <\/div>\n\n
\n wi<\/sub>\n =\n 1 \/ \u03c3i<\/sub>\u00b2\n <\/div>\n\n <\/div>\n\n\n \n

8. Weighted Average \uc804\uccb4 \uad00\uacc4<\/h2>\n\n
\n\n 
\n             \uce21\uc815\uac12 x_i\n                 \u2502\n                 \u25bc\n         \ud45c\uc900\ud3b8\ucc28 \u03c3_i \ud655\uc778\n                 \u2502\n                 \u25bc\n         w_i = 1 \/ \u03c3_i\u00b2\n                 \u2502\n                 \u25bc\n       \u03a3 w_i x_i \/ \u03a3 w_i\n                 \u2502\n                 \u25bc\n              x_wav\n                 \u2502\n                 \u25bc\n       \u03c3_wav = 1 \/ \u221a(\u03a3w_i)\n    <\/pre>\n\n  <\/div>\n\n\n  \n  
9. Least Square<\/h2>\n\n  
\n\n    
\n      \ub450 \ubc88\uc9f8 \uc774\ubbf8\uc9c0\uc5d0\uc11c\ub294\n      Least Square\ub97c \ucd5c\uc18c\uc81c\uacf1 \ub9de\ucd94\uae30\ub85c \uae30\ub85d\ud55c\ub2e4.\n    <\/p>\n\n    
\n      Least Square\n      =\n      \ucd5c\uc18c\uc81c\uacf1 \ub9de\ucd94\uae30\n    <\/div>\n\n    
\n      \ubc18\ubcf5\uce21\uc815\uc5d0\uc11c Weighted Average\ub97c \uc0ac\uc6a9\ud55c \ub4a4,\n      \uc77c\ubc18\uc801\uc778 \uc5ec\ub7ec \ub370\uc774\ud130\uc5d0 \ub300\ud574\uc11c\ub294\n      \ud568\uc218 Fitting \ubb38\uc81c\ub85c \ud655\uc7a5\ud55c\ub2e4.\n    <\/p>\n\n  <\/div>\n\n\n  \n  
10. 1\ucc28 \ud568\uc218 Fitting<\/h2>\n\n  
\n\n    
\n      \uc774\ubbf8\uc9c0\uc5d0\uc11c\ub294 \uce21\uc815\uc810\n      (xi<\/sub>, yi<\/sub>)\uac00 \uc5ec\ub7ec \uac1c \uc788\uc744 \ub54c\n      1\ucc28 \ud568\uc218\uc758 \uc0c1\uc218 A\uc640 B\ub97c \uad6c\ud558\ub294 \ubb38\uc81c\ub97c \ub2e4\ub8ec\ub2e4.\n    <\/p>\n\n    
\n      y\n      =\n      A + Bx\n    <\/div>\n\n    
\n      \uce21\uc815 \ub370\uc774\ud130\ub85c\ubd80\ud130\n      A\uc640 B\ub97c Least Square\ub85c \uacb0\uc815\ud55c\ub2e4.\n    <\/p>\n\n  <\/div>\n\n\n  \n  
11. x\uc640 y\uc758 \ubd88\ud655\uc2e4\uc131<\/h2>\n\n  
\n\n    
\n      \uc774\ubbf8\uc9c0\uc5d0\uc11c\ub294\n      xi<\/sub>\uc640 yi<\/sub>\ub97c \uce21\uc815\ud560 \ub54c\n      yi<\/sub>\uc758 \ubd88\ud655\uc2e4\uc131\uc744 \uace0\ub824\ud558\ub294 \uacbd\uc6b0\ub97c \ub2e4\ub8ec\ub2e4.\n    <\/p>\n\n    
\n      xi<\/sub>\uc758 \ubd88\ud655\uc2e4\uc131\uc740\n      yi<\/sub>\uc5d0 \ube44\ud574 \uc791\ub2e4\uace0 \uac00\uc815\ud558\ub294 \ubc29\ud5a5\uc73c\ub85c \uae30\ub85d\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n    
\n      xi<\/sub>\n      \u2192\n      \ubd88\ud655\uc2e4\uc131 \uc791\uc74c\n    <\/div>\n\n    
\n      yi<\/sub>\n      \u2192\n      \ubd88\ud655\uc2e4\uc131 \uace0\ub824\n    <\/div>\n\n  <\/div>\n\n\n  \n  
12. \ub3c5\ub9bd \uce21\uc815 \ub370\uc774\ud130\uc758 \ud655\ub960<\/h2>\n\n  
\n\n    
\n      \uc5ec\ub7ec \uce21\uc815\uac12\uc774 \uc11c\ub85c \ub3c5\ub9bd\uc774\ub77c\ub294 \uac00\uc815 \uc544\ub798\n      \uc804\uccb4 \ud655\ub960\uc740 \uac01 \uce21\uc815\uac12\uc758 \ud655\ub960\uc744 \uacf1\ud558\ub294 \ud615\ud0dc\ub85c \uae30\ub85d\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n    
\n      ProbA,B<\/sub>\n      (\n      y\u2081,y\u2082,…,yn<\/sub>\n      )\n      =\n      Prob(y\u2081)\n      Prob(y\u2082)\n      \u00b7\u00b7\u00b7\n      Prob(yn<\/sub>)\n    <\/div>\n\n  <\/div>\n\n\n  \n  
13. Least Square\uc758 \u03c7\u00b2<\/h2>\n\n  
\n\n    
\n      \uc120\ud615 Fitting\uc5d0\uc11c\ub294\n      \uce21\uc815\uac12\uacfc \uc9c1\uc120\uc758 \ucc28\uc774\ub97c \uc774\uc6a9\ud558\uc5ec\n      \u03c7\u00b2\ub97c \uad6c\uc131\ud55c\ub2e4.\n    <\/p>\n\n    
\n      \u03c7\u00b2\n      =\n      \u03a3\n      [\n      (\n      yi<\/sub>\n      –\n      A\n      –\n      Bxi<\/sub>\n      )\u00b2\n      \/\n      \u03c3yi<\/sub>\u00b2\n      ]\n    <\/div>\n\n    
\n      \n        \uce21\uc815\uc810\uacfc \uc9c1\uc120 \uc0ac\uc774\uc758 \uc624\ucc28\ub97c \uc81c\uacf1\ud558\uc5ec \ub354\ud558\uace0,\n        \uc774 \uac12\uc774 \ucd5c\uc18c\uac00 \ub418\ub294 A\uc640 B\ub97c \ucc3e\ub294\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  \n  
14. \ubaa8\ub4e0 y\uc758 \u03c3\uac00 \uac19\uc740 \uacbd\uc6b0<\/h2>\n\n  
\n\n    
\n      \uc138 \ubc88\uc9f8 \uc774\ubbf8\uc9c0\uc5d0\uc11c\ub294\n      \ubaa8\ub4e0 \u03c3yi<\/sub>\uac00 \ub3d9\uc77c\ud55c \uacbd\uc6b0\ub97c \ub193\uace0\n      A\uc640 B\uc5d0 \ub300\ud574 \u03c7\u00b2\ub97c \ubbf8\ubd84\ud55c\ub2e4.\n    <\/p>\n\n    
\n      \u2202\u03c7\u00b2 \/ \u2202A\n      =\n      \u03a3\n      (\n      yi<\/sub>\n      –\n      A\n      –\n      Bxi<\/sub>\n      )\n      =\n      0\n    <\/div>\n\n    
\n      \u2202\u03c7\u00b2 \/ \u2202B\n      =\n      \u03a3\n      xi<\/sub>\n      (\n      yi<\/sub>\n      –\n      A\n      –\n      Bxi<\/sub>\n      )\n      =\n      0\n    <\/div>\n\n  <\/div>\n\n\n  \n  
15. A\uc640 B\ub97c \uad6c\ud558\uae30 \uc704\ud55c \uc5f0\ub9bd\ubc29\uc815\uc2dd<\/h2>\n\n  
\n\n    
\n      \ub450 \ubbf8\ubd84\uc2dd\uc744 \uc815\ub9ac\ud558\uba74\n      \ub2e4\uc74c \ub450 \uc5f0\ub9bd\ubc29\uc815\uc2dd\uc744 \uc5bb\ub294\ub2e4.\n    <\/p>\n\n    
\n      AN\n      +\n      B\u03a3xi<\/sub>\n      =\n      \u03a3yi<\/sub>\n    <\/div>\n\n    
\n      A\u03a3xi<\/sub>\n      +\n      B\u03a3xi<\/sub>\u00b2\n      =\n      \u03a3xi<\/sub>yi<\/sub>\n    <\/div>\n\n    
\n      \uc774\ubbf8\uc9c0\uc5d0\uc11c\ub294 \uc774 \ub450 \uc2dd\uc744 \uc5f0\ub9bd\ud558\uc5ec\n      A\uc640 B\ub97c \uad6c\ud55c\ub2e4\uace0 \uae30\ub85d\ud55c\ub2e4.\n    <\/p>\n\n  <\/div>\n\n\n  \n  
16. \ubb38\uc81c\uc5d0\uc11c \uc8fc\uc5b4\uc9c0\ub294 \uac12<\/h2>\n\n  
\n\n    
\n      \uc138 \ubc88\uc9f8 \uc774\ubbf8\uc9c0\uc5d0\ub294\n      Least Square \ubb38\uc81c\uc5d0\uc11c \ub2e4\uc74c \ud569\ub4e4\uc774\n      \uc8fc\uc5b4\uc9c0\ub294 \uac12\uc73c\ub85c \uae30\ub85d\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n    
    \n      
  • \u03a3xi<\/sub><\/li>\n      
  • \u03a3yi<\/sub><\/li>\n      
  • \u03a3xi<\/sub>\u00b2<\/li>\n      
  • \u03a3xi<\/sub>yi<\/sub><\/li>\n      
  • N<\/li>\n    <\/ul>\n\n    
    \n      \uc774 \uac12\ub4e4\uc744 \ub450 \uc5f0\ub9bd\ubc29\uc815\uc2dd\uc5d0 \ub300\uc785\ud558\uc5ec\n      A\uc640 B\ub97c \uacc4\uc0b0\ud55c\ub2e4.\n    <\/p>\n\n  <\/div>\n\n\n  \n  
    17. Least Square \uacc4\uc0b0 \ud750\ub984<\/h2>\n\n  
    \n\n    
    \n             \uce21\uc815 \ub370\uc774\ud130\n             (x_i, y_i)\n                 \u2502\n                 \u25bc\n           y = A + Bx\n                 \u2502\n                 \u25bc\n        \uc794\ucc28 y_i-A-Bx_i\n                 \u2502\n                 \u25bc\n        \u03c7\u00b2 = \u03a3 \uc794\ucc28\u00b2\/\u03c3_yi\u00b2\n                 \u2502\n                 \u25bc\n        \u2202\u03c7\u00b2\/\u2202A = 0\n        \u2202\u03c7\u00b2\/\u2202B = 0\n                 \u2502\n                 \u25bc\n        \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n        \u2502 AN+B\u03a3x_i=\u03a3y_i       \u2502\n        \u2502 A\u03a3x_i+B\u03a3x_i\u00b2=\u03a3x_iy_i\u2502\n        \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n                 \u2502\n                 \u25bc\n               A, B\n    <\/pre>\n\n  <\/div>\n\n\n  \n  
    18. Weighted Average\uc640 Least Square\uc758 \uc5f0\uacb0<\/h2>\n\n  
    \n\n    
    \n           \ubc18\ubcf5 \uce21\uc815\uac12\n               \u2502\n               \u25bc\n         \u03c3_i\ub85c \uc2e0\ub8b0\ub3c4 \ud45c\ud604\n               \u2502\n               \u25bc\n         w_i = 1\/\u03c3_i\u00b2\n               \u2502\n               \u25bc\n        Weighted Average\n\n\n           \uc5ec\ub7ec (x_i,y_i)\n               \u2502\n               \u25bc\n          \uc9c1\uc120 Fitting\n               \u2502\n               \u25bc\n        \uc794\ucc28\uc758 \uc81c\uacf1\ud569 \u03c7\u00b2\n               \u2502\n               \u25bc\n        \u03c7\u00b2\ub97c \ucd5c\uc18c\ud654\ud558\ub294\n             A, B\n               \u2502\n               \u25bc\n         Least Square\n    <\/pre>\n\n  <\/div>\n\n\n  \n  
    19. \uc774\ubbf8\uc9c0 \ud575\uc2ec \uc815\ub9ac<\/h2>\n\n  
    \n\n    \n\n      \n        \n          \n\n        \n          \n          \n          \n          \n          \n          \n          \n          \n          \n          \n          
    \ud56d\ubaa9<\/th>\n          \uc774\ubbf8\uc9c0 \ub0b4\uc6a9<\/th>\n        <\/tr>\n      <\/thead>\n\n      
    Weight<\/strong><\/td>\n          wi<\/sub> = 1\/\u03c3i<\/sub>\u00b2<\/td>\n        <\/tr>\n\n        
    Weighted Average<\/strong><\/td>\n          xwav<\/sub> = \u03a3wi<\/sub>xi<\/sub>\/\u03a3wi<\/sub><\/td>\n        <\/tr>\n\n        
    \u03c3 \uc99d\uac00<\/strong><\/td>\n          Weight \uac10\uc18c<\/td>\n        <\/tr>\n\n        
    Weighted \u03c3<\/strong><\/td>\n          \u03c3wav<\/sub> = 1\/\u221a(\u03a3wi<\/sub>)<\/td>\n        <\/tr>\n\n        
    Least Square<\/strong><\/td>\n          \ucd5c\uc18c\uc81c\uacf1 \ub9de\ucd94\uae30<\/td>\n        <\/tr>\n\n        
    \uc9c1\uc120\uc2dd<\/strong><\/td>\n          y = A + Bx<\/td>\n        <\/tr>\n\n        
    \uce21\uc815 \uac00\uc815<\/strong><\/td>\n          x\uc758 \ubd88\ud655\uc2e4\uc131\uc740 \uc791\uace0 y\uc758 \ubd88\ud655\uc2e4\uc131\uc744 \uace0\ub824<\/td>\n        <\/tr>\n\n        
    \u03c7\u00b2<\/strong><\/td>\n          \u03a3[(yi<\/sub>-A-Bxi<\/sub>)\u00b2\/\u03c3yi<\/sub>\u00b2]<\/td>\n        <\/tr>\n\n        
    \ucd5c\uc18c \uc870\uac74<\/strong><\/td>\n          \u2202\u03c7\u00b2\/\u2202A = 0, \u2202\u03c7\u00b2\/\u2202B = 0<\/td>\n        <\/tr>\n\n        
    \uccab \ubc88\uc9f8 Normal Equation<\/strong><\/td>\n          AN+B\u03a3xi<\/sub>=\u03a3yi<\/sub><\/td>\n        <\/tr>\n\n        
    \ub450 \ubc88\uc9f8 Normal Equation<\/strong><\/td>\n          A\u03a3xi<\/sub>+B\u03a3xi<\/sub>\u00b2=\u03a3xi<\/sub>yi<\/sub><\/td>\n        <\/tr>\n\n      <\/tbody>\n\n    <\/table>\n\n  <\/div>\n\n\n  \n  
    \n\n    \n      \uc774 HTML\uc740 \ud398\uc774\uc9c0 \ubcf8\ubb38\uc744 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uace0,\n      \ud574\ub2f9 \ud398\uc774\uc9c0\uc5d0 \uc0bd\uc785\ub41c \uc77c\ubc18 \uc774\ubbf8\uc9c0 3\uc7a5\ub9cc\n      \uc9c1\uc811 \uc2dc\uac01 \ud310\ub3c5\ud558\uc5ec \uc791\uc131\ud558\uc600\ub2e4.\n\n      \uc774 \ud398\uc774\uc9c0\uc5d0\uc11c\ub294 NeoStudio PDF\uac00 \ud655\uc778\ub418\uc9c0 \uc54a\uc558\ub2e4.\n\n      \uccab \ubc88\uc9f8 \uc774\ubbf8\uc9c0\ub294 \uc11c\ub85c \ub2e4\ub978 \ud45c\uc900\ud3b8\ucc28\ub97c \uac00\uc9c4 \uce21\uc815\uac12\uc744\n      \u03c7\u00b2 \ucd5c\uc18c\ud654\ub85c \uacb0\ud569\ud558\uace0,\n      w_i = 1\/\u03c3_i\u00b2\ub97c \uc774\uc6a9\ud55c Weighted Average\ub97c \uc720\ub3c4\ud55c\ub2e4.\n\n      \ub450 \ubc88\uc9f8 \uc774\ubbf8\uc9c0\ub294 Weighted Average\uc758 \ud45c\uc900\ud3b8\ucc28\uc640\n      Least Square\ub97c \uc2dc\uc791\ud558\uba70,\n      \uce21\uc815\uc810 (x_i,y_i)\uc5d0 \ub300\ud574\n      y = A + Bx \ud615\ud0dc\uc758 1\ucc28 \ud568\uc218 Fitting\uc744 \ub2e4\ub8ec\ub2e4.\n\n      \uc138 \ubc88\uc9f8 \uc774\ubbf8\uc9c0\ub294 \u03c7\u00b2\ub97c A\uc640 B\ub85c \ubbf8\ubd84\ud558\uc5ec\n      AN+B\u03a3x_i=\u03a3y_i,\n      A\u03a3x_i+B\u03a3x_i\u00b2=\u03a3x_iy_i\uc758\n      \ub450 \uc5f0\ub9bd\ubc29\uc815\uc2dd\uc744 \ub9cc\ub4dc\ub294 \uacfc\uc815\uc744 \uae30\ub85d\ud55c\ub2e4.\n\n      \ub9c8\uc9c0\ub9c9 \uc218\uce58 \uc608\uc81c\uc758 \uc77c\ubd80 \uc22b\uc790\ub294\n      \uc190\uae00\uc528\uc5d0\uc11c \uba85\ud655\ud558\uac8c \ud310\ub3c5\ub418\uc9c0 \uc54a\uc544\n      \uc784\uc758\ub85c \ubcf4\uc644\ud558\uc9c0 \uc54a\uc558\ub2e4.\n\n      \uc774\ubbf8\uc9c0\uc5d0 \uc5c6\ub294 \ud68c\uadc0\ubd84\uc11d \uc774\ub860,\n      \uc0c1\uad00\uacc4\uc218,\n      R\u00b2,\n      \ub2e4\ud56d\ud68c\uadc0 \ub4f1\uc758 \ub0b4\uc6a9\uc740 \ucd94\uac00\ud558\uc9c0 \uc54a\uc558\ub2e4.\n    <\/strong>\n\n  <\/div>\n\n\n  \n  
    \n    Error Analysis,\n    \uc624\ucc28\ubd84\uc11d,\n    Weighted Average,\n    Weighted Mean,\n    Weight,\n    Standard Deviation,\n    Sigma,\n    Chi Square,\n    \u03c7\u00b2,\n    Least Square,\n    Least Squares,\n    Linear Fitting,\n    Linear Regression,\n    Residual,\n    A,\n    B,\n    Normal Equation,\n    Uncertainty,\n    Measurement\n  <\/div>\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"
    \uc624\ucc28\ubd84\uc11d\uc785\ubb38 \uc815\ub9ac2 Weighted Average \u00b7 Weight \u00b7 Standard Deviation \u00b7 Least Square \u00b7 Linear Fitting \u00b7 \u03c7\u00b2 1. \uc11c\ub85c \ub2e4\ub978 \ubd88\ud655\uc2e4\uc131\uc744 \uac00\uc9c4 \uce21\uc815\uac12 \uc774\ubbf8\uc9c0\uc5d0\uc11c\ub294 \uc11c\ub85c \ub2e4\ub978 \ubd84\ud3ec\ub97c \uac00\uc9c4 \ub450 \uce21\uc815\uac12\uc744 \ud558\ub098\uc758 \uac12\uc73c\ub85c \ud3c9\uade0\ud560 \ub54c \uac01 \uce21\uc815\uac12\uc758 \ubd88\ud655\uc2e4\uc131\uc744 \uace0\ub824\ud55c\ub2e4. \uce21\uc815\uac12\uc744 xA, xB, \uac01\uac01\uc758 \ud45c\uc900\ud3b8\ucc28\ub97c \u03c3A, \u03c3B\ub85c \ub450\uace0 \u03c7\u00b2 \ud615\ud0dc\ub85c \ub098\ud0c0\ub0b8\ub2e4. \u03c7\u00b2 = ( (xA-x) \/ \u03c3A […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1185],"tags":[1468,1905],"class_list":["post-8711","post","type-post","status-publish","format-standard","hentry","category-1185","tag-least-square","tag-weighted-sum"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/8711","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/comments?post=8711"}],"version-history":[{"count":2,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/8711\/revisions"}],"predecessor-version":[{"id":9726,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/8711\/revisions\/9726"}],"wp:attachment":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/media?parent=8711"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/categories?post=8711"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/tags?post=8711"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}