{"id":524,"date":"2023-07-29T15:03:25","date_gmt":"2023-07-29T15:03:25","guid":{"rendered":"https:\/\/statorials.org\/ko\/%e1%84%89%e1%85%b5%e1%86%ab%e1%84%85%e1%85%ac-%e1%84%80%e1%85%ae%e1%84%80%e1%85%a1%e1%86%ab-f-%e1%84%87%e1%85%ae%e1%86%ab%e1%84%91%e1%85%a9\/"},"modified":"2023-07-29T15:03:25","modified_gmt":"2023-07-29T15:03:25","slug":"%e1%84%89%e1%85%b5%e1%86%ab%e1%84%85%e1%85%ac-%e1%84%80%e1%85%ae%e1%84%80%e1%85%a1%e1%86%ab-f-%e1%84%87%e1%85%ae%e1%86%ab%e1%84%91%e1%85%a9","status":"publish","type":"post","link":"https:\/\/statorials.org\/ko\/%e1%84%89%e1%85%b5%e1%86%ab%e1%84%85%e1%85%ac-%e1%84%80%e1%85%ae%e1%84%80%e1%85%a1%e1%86%ab-f-%e1%84%87%e1%85%ae%e1%86%ab%e1%84%91%e1%85%a9\/","title":{"rendered":"F \ubd84\ud3ec\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc2e0\ub8b0 \uad6c\uac04\uc744 \ub9cc\ub4dc\ub294 \ubc29\ubc95"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\ub450 \ubaa8\uc9d1\ub2e8\uc758 \ubd84\uc0b0\uc774 \ub3d9\uc77c\ud55c\uc9c0 \ud655\uc778\ud558\uae30 \uc704\ud574 \ubd84\uc0b0 \ube44\uc728 <strong>\u03c3 <sup>2<\/sup> <sub>1<\/sub> \/ \u03c3 <sup>2<\/sup> <sub>2<\/sub> \ub97c<\/strong> \uacc4\uc0b0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc5ec\uae30\uc11c \u03c3 <sup>2<\/sup> <sub>1<\/sub> \uc740 \ubaa8\uc9d1\ub2e8 1\uc758 \ubd84\uc0b0\uc774\uace0 \u03c3 <sup>2<\/sup> <sub>2<\/sub> \ub294 \ubaa8\uc9d1\ub2e8 2\uc758 \ubd84\uc0b0\uc785\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc2e4\uc81c \ubaa8\uc9d1\ub2e8 \ubd84\uc0b0 \ube44\uc728\uc744 \ucd94\uc815\ud558\uae30 \uc704\ud574 \uc77c\ubc18\uc801\uc73c\ub85c \uac01 \ubaa8\uc9d1\ub2e8\uc5d0\uc11c <a href=\"https:\/\/statorials.org\/ko\/\u1109\u1162\u11b7\u1111\u1173\u11af\u1105\u1175\u11bc-\u1107\u1161\u11bc\u1107\u1165\u11b8\/\" target=\"_blank\" rel=\"noopener\">\ub2e8\uc21c \ubb34\uc791\uc704 \ud45c\ubcf8\uc744<\/a> \ucd94\ucd9c\ud558\uc5ec \ud45c\ubcf8 \ubd84\uc0b0 \ube44\uc728 <strong>s <sub>1<\/sub> <sup>2<\/sup> \/ s <sub>2<\/sub> <sup>2<\/sup> \ub97c<\/strong> \uacc4\uc0b0\ud569\ub2c8\ub2e4. \uc5ec\uae30\uc11c s <sub>1<\/sub> <sup>2<\/sup> \ubc0f s <sub>2<\/sub> <sup>2<\/sup> \ub294 \ud45c\ubcf8 1\uacfc \ud45c\ubcf8\uc758 \ud45c\ubcf8 \ubd84\uc0b0\uc785\ub2c8\ub2e4. . 2, \uac01\uac01.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774 \uac80\uc815\uc5d0\uc11c\ub294 s <sub>1<\/sub> <sup>2<\/sup> \ubc0f s <sub>2<\/sub> <sup>2 \uac00<\/sup> \uc815\uaddc \ubd84\ud3ec \ubaa8\uc9d1\ub2e8\uc5d0\uc11c \ucd94\ucd9c\ub41c n <sub>1<\/sub> \ubc0f n <sub>2<\/sub> \ud06c\uae30\uc758 \ub3c5\ub9bd \ud45c\ubcf8\uc5d0\uc11c \uacc4\uc0b0\ub41c\ub2e4\uace0 \uac00\uc815\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774 \ube44\uc728\uc774 1\uc5d0\uc11c \uba40\uc5b4\uc9c8\uc218\ub85d \ubaa8\uc9d1\ub2e8 \ub0b4 \ubd84\uc0b0\uc774 \ubd88\ud3c9\ub4f1\ud558\ub2e4\ub294 \uc99d\uac70\uac00 \ub354 \uac15\ud574\uc9d1\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\u03c3 <sup>2<\/sup> <sub>1<\/sub> \/ \u03c3 <sup>2<\/sup> <sub>2<\/sub> \uc5d0 \ub300\ud55c <strong>(1-\u03b1)100% \uc2e0\ub8b0\uad6c\uac04\uc740<\/strong> \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ub429\ub2c8\ub2e4.<\/span><\/p>\n<p style=\"text-align: center;\"> <span style=\"color: #000000;\">(s <sub>1<\/sub> <sup>2<\/sup> \/ s <sub>2<\/sub> <sup>2<\/sup> ) * F <sub>n <sub>1<\/sub> -1, n <sub>2<\/sub> -1, \u03b1\/2<\/sub> \u2264 \u03c3 <sup>2<\/sup> <sub>1<\/sub> \/ \u03c3 <sup>2<\/sup> <sub>2<\/sub> \u2264 (s <sub>1<\/sub> <sup>2<\/sup> \/ s <sub>2<\/sub> <sup>2<\/sup> ) * F <sub>n <sub>2<\/sub> -1, n <sub>1<\/sub> -1,<\/sub> <sub>\u03b1\/2<\/sub><\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc5ec\uae30\uc11c F <sub>n <sub>2<\/sub> -1, n <sub>1<\/sub> -1, \u03b1\/2<\/sub> \ubc0f F <sub>n <sub>1<\/sub> -1, n <sub>2<\/sub> -1,<\/sub> <sub>\u03b1\/2<\/sub> <sub>&nbsp;<\/sub> \uc120\ud0dd\ud55c \uc720\uc758 \uc218\uc900 \u03b1\uc5d0 \ub300\ud55c \ubd84\ud3ec F\uc758 \uc784\uacc4 \uac12\uc785\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \uc608\uc5d0\uc11c\ub294 \uc138 \uac00\uc9c0 \ub2e4\ub978 \ubc29\ubc95\uc744 \uc0ac\uc6a9\ud558\uc5ec \u03c3 <sup>2<\/sup> <sub>1<\/sub> \/ \u03c3 <sup>2<\/sup> <sub>2<\/sub> \uc5d0 \ub300\ud55c \uc2e0\ub8b0 \uad6c\uac04\uc744 \ub9cc\ub4dc\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\uc190\uc73c\ub85c<\/span><\/li>\n<li> <span style=\"color: #000000;\">\ub9c8\uc774\ud06c\ub85c\uc18c\ud504\ud2b8 \uc5d1\uc140\uc744 \uc0ac\uc6a9\ud558\uc138\uc694<\/span><\/li>\n<li> <span style=\"color: #000000;\"><em>R<\/em> \ud1b5\uacc4 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc0ac\uc6a9<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \uac01 \uc608\uc5d0 \ub300\ud574 \ub2e4\uc74c \uc815\ubcf4\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>\u03b1<\/strong> = 0.05<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>n <sub>1<\/sub><\/strong> = 16<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong><sub>n2<\/sub><\/strong> = 11<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>\ucd08 <sub>1<\/sub> <sup>2<\/sup><\/strong> =28.2<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>\ucd08 <sub>2<\/sub> <sup>2<\/sup><\/strong> = 19.3<\/span><\/li>\n<\/ul>\n<h2> <span style=\"color: #000000;\"><strong>\uc2e0\ub8b0 \uad6c\uac04\uc744 \uc218\ub3d9\uc73c\ub85c \uc0dd\uc131<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\"><strong>\u03c3 <sup>2<\/sup> <sub>1<\/sub> \/ \u03c3 <sup>2<\/sup> <sub>2<\/sub><\/strong> \uc5d0 \ub300\ud55c \uc2e0\ub8b0 \uad6c\uac04\uc744 \uc218\ub3d9\uc73c\ub85c \uacc4\uc0b0\ud558\ub824\uba74, \uc6b0\ub9ac\uac00 \uac00\uc9c0\uace0 \uc788\ub294 \uc22b\uc790\ub97c \uc2e0\ub8b0 \uad6c\uac04 \uacf5\uc2dd\uc5d0 \uc5f0\uacb0\ud558\uae30\ub9cc \ud558\uba74 \ub429\ub2c8\ub2e4.<\/span><\/p>\n<p style=\"text-align: center;\"> <span style=\"color: #000000;\">(s <sub>1<\/sub> <sup>2<\/sup> \/ s <sub>2<\/sub> <sup>2<\/sup> ) * F <sub>n1-1, n2-1,\u03b1\/2<\/sub> \u2264 \u03c3 <sup>2<\/sup> <sub>1<\/sub> \/ \u03c3 <sup>2<\/sup> <sub>2<\/sub> \u2264 (s <sub>1<\/sub> <sup>2<\/sup> \/ s <sub>2<\/sub> <sup>2<\/sup> ) * F <sub>n2-1, n1-1,<\/sub> <sub>\u03b1\/2<\/sub><\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc6b0\ub9ac\uac00 \ub204\ub77d\ud55c \uc720\uc77c\ud55c \uc22b\uc790\ub294 \uc911\uc694\ud55c \uac12\uc785\ub2c8\ub2e4.<\/span> <span style=\"color: #000000;\">\ub2e4\ud589\ud788\ub3c4 <a href=\"https:\/\/statorials.org\/ko\/f-\u1107\u1162\u1111\u1169-\u1110\u1166\u110b\u1175\u1107\u1173\u11af\/\" target=\"_blank\" rel=\"noopener\">\ubd84\ud3ec \ud14c\uc774\ube14 F<\/a> \uc5d0\uc11c \uc774\ub7ec\ud55c \uc911\uc694\ud55c \uac12\uc744 \ucc3e\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><sub>Fn2-1, n1-1, \u03b1\/2<\/sub> = F10 <sub>, 15, 0.025<\/sub> = <strong>3.0602<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">F <sub>n1-1, n2-1,<\/sub> <sub>\u03b1\/2<\/sub> = 1\/ F <sub>15, 10, 0.025<\/sub> = 1 \/ 3.5217 = <strong>0.2839<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\"><em>(\ud074\ub9ad\ud558\uc2dc\uba74 \ud45c\uac00 \ud655\ub300\ub429\ub2c8\ub2e4)<\/em><\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-489 size-full\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/f2.5.png\" alt=\"\uc54c\ud30c\uc5d0 \ub300\ud55c F \ubd84\ud3ec \ud14c\uc774\ube14 = 0.025.\" width=\"1361\" height=\"829\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">\uc774\uc81c \ubaa8\ub4e0 \uc22b\uc790\ub97c \uc2e0\ub8b0 \uacf5\uc2dd \uad6c\uac04\uc5d0 \uc5f0\uacb0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p style=\"text-align: center;\"> <span style=\"color: #000000;\">(s <sub>1<\/sub> <sup>2<\/sup> \/ s <sub>2<\/sub> <sup>2<\/sup> ) * F <sub>n1-1, n2-1,\u03b1\/2<\/sub> \u2264 \u03c3 <sup>2<\/sup> <sub>1<\/sub> \/ \u03c3 <sup>2<\/sup> <sub>2<\/sub> \u2264 (s <sub>1<\/sub> <sup>2<\/sup> \/ s <sub>2<\/sub> <sup>2<\/sup> ) * F <sub>n2-1, n1-1,<\/sub> <sub>\u03b1\/2<\/sub><\/span><\/p>\n<p style=\"text-align: center;\"> <span style=\"color: #000000;\">(28.2 \/ 19.3) * (0.2839) \u2264 \u03c3 <sup>2<\/sup> <sub>1<\/sub> \/ \u03c3 <sup>2<\/sup> <sub>2<\/sub> \u2264 (28.2 \/ 19.3) * (3.0602)<\/span><\/p>\n<p style=\"text-align: center;\"> <span style=\"color: #000000;\">0.4148 \u2264 \u03c3 <sup>2<\/sup> <sub>1<\/sub> \/ \u03c3 <sup>2<\/sup> <sub>2<\/sub> \u2264 4.4714<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub530\ub77c\uc11c \ubaa8\uc9d1\ub2e8 \ubd84\uc0b0 \ube44\uc728\uc5d0 \ub300\ud55c 95% \uc2e0\ub8b0 \uad6c\uac04\uc740 <strong>(0.4148, 4.4714)<\/strong> \uc785\ub2c8\ub2e4.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Excel\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc2e0\ub8b0 \uad6c\uac04 \ub9cc\ub4e4\uae30<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \uc774\ubbf8\uc9c0\ub294 Excel\uc5d0\uc11c \ubaa8\uc9d1\ub2e8 \ubd84\uc0b0 \ube44\uc728\uc5d0 \ub300\ud55c 95% \uc2e0\ub8b0 \uad6c\uac04\uc744 \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4. \uc2e0\ub8b0 \uad6c\uac04\uc758 \ud558\ud55c\uacfc \uc0c1\ud55c\uc740 E \uc5f4\uc5d0 \ud45c\uc2dc\ub418\uace0 \ud558\ud55c\uacfc \uc0c1\ud55c\uc744 \ucc3e\ub294 \ub370 \uc0ac\uc6a9\ub418\ub294 \uacf5\uc2dd\uc740 F \uc5f4\uc5d0 \ud45c\uc2dc\ub429\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub530\ub77c\uc11c \ubaa8\uc9d1\ub2e8 \ubd84\uc0b0 \ube44\uc728\uc5d0 \ub300\ud55c 95% \uc2e0\ub8b0 \uad6c\uac04\uc740 <strong>(0.4148, 4.4714)<\/strong> \uc785\ub2c8\ub2e4. \uc774\ub294 \uc2e0\ub8b0 \uad6c\uac04\uc744 \uc218\ub3d9\uc73c\ub85c \uacc4\uc0b0\ud560 \ub54c \uc5bb\uc740 \uac83\uacfc \uc77c\uce58\ud569\ub2c8\ub2e4.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>R\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc2e0\ub8b0 \uad6c\uac04 \ub9cc\ub4e4\uae30<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 R\uc758 \ubaa8\uc9d1\ub2e8 \ubd84\uc0b0 \ube44\uc728\uc5d0 \ub300\ud55c 95% \uc2e0\ub8b0 \uad6c\uac04\uc744 \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define significance level, sample sizes, and sample variances\n<\/span>alpha &lt;- .05\nn1 &lt;- 16\nn2 &lt;- 11\nvar1 &lt;- 28.2\nvar2 &lt;- 19.3\n\n<span style=\"color: #008080;\">#define F critical values\n<\/span>upper_crit &lt;- 1\/qf(alpha\/2, n1-1, n2-1)\nlower_crit &lt;- qf(alpha\/2, n2-1, n1-1)\n\n<span style=\"color: #008080;\">#find confidence interval\n<\/span>lower_bound &lt;- (var1\/var2) * lower_crit\nupper_bound &lt;- (var1\/var2) * upper_crit\n\n<span style=\"color: #008080;\">#output confidence interval\n<\/span>paste0(\"(\", lower_bound, \", \", upper_bound, \" )\")\n\n#[1] \"(0.414899337980266, 4.47137571035219 )\"\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\ub530\ub77c\uc11c \ubaa8\uc9d1\ub2e8 \ubd84\uc0b0 \ube44\uc728\uc5d0 \ub300\ud55c 95% \uc2e0\ub8b0 \uad6c\uac04\uc740 <strong>(0.4148, 4.4714)<\/strong> \uc785\ub2c8\ub2e4. \uc774\ub294 \uc2e0\ub8b0 \uad6c\uac04\uc744 \uc218\ub3d9\uc73c\ub85c \uacc4\uc0b0\ud560 \ub54c \uc5bb\uc740 \uac83\uacfc \uc77c\uce58\ud569\ub2c8\ub2e4.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>\ucd94\uac00 \ub9ac\uc18c\uc2a4<\/strong><\/span><\/h2>\n<p> <strong><a href=\"https:\/\/statorials.org\/ko\/\u1107\u1162\u1111\u1169-\u1110\u1166\u110b\u1175\u1107\u1173\u11af-f\u1105\u1173\u11af-\u110b\u1175\u11b0\u1102\u1173\u11ab-\u1107\u1161\u11bc\u1107\u1165\u11b8\/\" target=\"_blank\" rel=\"noopener\">F \ubc30\uc804\ubc18\uc744 \uc77d\ub294 \ubc29\ubc95<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/\u1110\u1169\u11bc\u1100\u1168\u1112\u1161\u11a8\u110b\u1173\u11ab-\u1100\u1161\u11ab\u1103\u1161\u11ab\u1112\u1161\u1100\u1169-\u110c\u1175\u11a8\u110c\u1165\u11b8\u110c\u1165\u11a8\u110b\u1175\u11ab-\u1107\u1161\u11bc\u1107\u1165\u11b8\u110b\u1173\u1105\u1169-\u1100\u1162\u1102\u1167\u11b7\u110b\u1173\u11af-\u1109\u1165\u11af\u1106\u1167\u11bc\u1112\u1161\u1106\u1173\u1105\u1169-\u1110\u1169\u11bc\u1100\u1168\u1105\u1173\u11af-\u1103\u1165-\u1109\u1171\u11b8\u1100\u1166-\u1107\u1162\u110b\u116e\u11af-\u1109\u116e-\u110b\u1175\u11bb\u1109\u1173\u11b8\u1102\u1175\u1103\u1161.\/\" target=\"_blank\" rel=\"noopener\">Excel\uc5d0\uc11c \uc784\uacc4\uac12 F\ub97c \ucc3e\ub294 \ubc29\ubc95<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ub450 \ubaa8\uc9d1\ub2e8\uc758 \ubd84\uc0b0\uc774 \ub3d9\uc77c\ud55c\uc9c0 \ud655\uc778\ud558\uae30 \uc704\ud574 \ubd84\uc0b0 \ube44\uc728 \u03c3 2 1 \/ \u03c3 2 2 \ub97c \uacc4\uc0b0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc5ec\uae30\uc11c \u03c3 2 1 \uc740 \ubaa8\uc9d1\ub2e8 1\uc758 \ubd84\uc0b0\uc774\uace0 \u03c3 2 2 \ub294 \ubaa8\uc9d1\ub2e8 2\uc758 \ubd84\uc0b0\uc785\ub2c8\ub2e4. \uc2e4\uc81c \ubaa8\uc9d1\ub2e8 \ubd84\uc0b0 \ube44\uc728\uc744 \ucd94\uc815\ud558\uae30 \uc704\ud574 \uc77c\ubc18\uc801\uc73c\ub85c \uac01 \ubaa8\uc9d1\ub2e8\uc5d0\uc11c \ub2e8\uc21c \ubb34\uc791\uc704 \ud45c\ubcf8\uc744 \ucd94\ucd9c\ud558\uc5ec \ud45c\ubcf8 \ubd84\uc0b0 \ube44\uc728 s 1 2 \/ s [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-524","post","type-post","status-publish","format-standard","hentry","category-20"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>F \ubd84\ud3ec\ub97c 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