{"id":1227,"date":"2023-07-27T05:20:12","date_gmt":"2023-07-27T05:20:12","guid":{"rendered":"https:\/\/statorials.org\/ko\/r%e1%84%8b%e1%85%b4-%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\/"},"modified":"2023-07-27T05:20:12","modified_gmt":"2023-07-27T05:20:12","slug":"r%e1%84%8b%e1%85%b4-%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","status":"publish","type":"post","link":"https:\/\/statorials.org\/ko\/r%e1%84%8b%e1%85%b4-%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\/","title":{"rendered":"R\uc5d0\uc11c \uc2e0\ub8b0 \uad6c\uac04\uc744 \ucc3e\ub294 \ubc29\ubc95(\uc608\uc81c \ud3ec\ud568)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\uc2e0\ub8b0\uad6c\uac04\uc740 \uc77c\uc815 \uc218\uc900\uc758 \uc2e0\ub8b0\ub3c4\ub97c \uac16\ub294 <a href=\"https:\/\/statorials.org\/ko\/\u1110\u1169\u11bc\u1100\u1168-\u1103\u1162-\u1106\u1162\u1100\u1162\u1107\u1167\u11ab\u1109\u116e\/\" target=\"_blank\" rel=\"noopener noreferrer\">\ubaa8\uc9d1\ub2e8 \ub9e4\uac1c\ubcc0\uc218\uac00<\/a> \ud3ec\ud568\ub420 \uac00\ub2a5\uc131\uc774 \uc788\ub294 \uac12\uc758 \ubc94\uc704\uc785\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774\ub294 \ub2e4\uc74c \uc77c\ubc18 \uacf5\uc2dd\uc5d0 \ub530\ub77c \uacc4\uc0b0\ub429\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>\uc2e0\ub8b0 \uad6c\uac04<\/strong> = (\uc810 \ucd94\uc815\uce58) +\/- (\uc784\uacc4\uac12)* (\ud45c\uc900 \uc624\ucc28)<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774 \uacf5\uc2dd\uc740 \ud558\ud55c\uacfc \uc0c1\ud55c\uc774 \uc788\ub294 \uad6c\uac04\uc744 \uc0dd\uc131\ud558\uba70, \uc5ec\uae30\uc5d0\ub294 \uc77c\uc815 \uc218\uc900\uc758 \uc2e0\ub8b0\ub3c4\ub97c \uac16\ub294 \ubaa8\uc9d1\ub2e8 \ubaa8\uc218\uac00 \ud3ec\ud568\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>\uc2e0\ub8b0\uad6c\uac04<\/strong> = [\ud558\ud55c, \uc0c1\ud55c]<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774 \ud29c\ud1a0\ub9ac\uc5bc\uc5d0\uc11c\ub294 R\uc5d0\uc11c \ub2e4\uc74c \uc2e0\ub8b0 \uad6c\uac04\uc744 \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc744 \uc124\uba85\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>1.<\/strong> \ud3c9\uade0\uc5d0 \ub300\ud55c \uc2e0\ub8b0\uad6c\uac04<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>2.<\/strong> \ud3c9\uade0 \ucc28\uc774\uc5d0 \ub300\ud55c \uc2e0\ub8b0 \uad6c\uac04<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>3.<\/strong> \ube44\uc728\uc5d0 \ub300\ud55c \uc2e0\ub8b0\uad6c\uac04<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>4.<\/strong> \ube44\uc728 \ucc28\uc774\uc5d0 \ub300\ud55c \uc2e0\ub8b0 \uad6c\uac04<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uac11\uc2dc\ub2e4!<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\uc608 1: \ud3c9\uade0\uc5d0 \ub300\ud55c \uc2e0\ub8b0 \uad6c\uac04<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/ko\/\u1111\u1167\u11bc\u1100\u1172\u11ab-\u1109\u1175\u11ab\u1105\u116c-\u1100\u116e\u1100\u1161\u11ab\/\" target=\"_blank\" rel=\"noopener noreferrer\">\ud3c9\uade0\uc5d0 \ub300\ud55c \uc2e0\ub8b0 \uad6c\uac04\uc744<\/a> \uacc4\uc0b0\ud558\ub824\uba74 \ub2e4\uc74c \uacf5\uc2dd\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>\uc2e0\ub8b0\uad6c\uac04 = <span style=\"text-decoration: overline;\">x<\/span> +\/- t <sub>n-1, 1-\u03b1\/2<\/sub> *(s\/\u221an)<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">\uae08:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong><span style=\"text-decoration: overline;\">x<\/span> :<\/strong> \ud45c\ubcf8 \ud3c9\uade0<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>t:<\/strong> t \uc784\uacc4\uac12<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>s:<\/strong> \ud45c\ubcf8 \ud45c\uc900\ud3b8\ucc28<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>n:<\/strong> \ud45c\ubcf8 \ud06c\uae30<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\"><strong>\uc608:<\/strong> \ub2e4\uc74c \uc815\ubcf4\ub97c \uc0ac\uc6a9\ud558\uc5ec \ubb34\uc791\uc704 \uac70\ubd81\uc774 \uc0d8\ud50c\uc744 \uc218\uc9d1\ud55c\ub2e4\uace0 \uac00\uc815\ud569\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\ud45c\ubcf8 \ud06c\uae30 <strong>n = 25<\/strong><\/span><\/li>\n<li> <span style=\"color: #000000;\">\ud3c9\uade0 \uc0d8\ud50c \uc911\ub7c9 <strong><span style=\"text-decoration: overline;\">x<\/span> = 300<\/strong><\/span><\/li>\n<li> <span style=\"color: #000000;\">\ud45c\ubcf8 \ud45c\uc900\ud3b8\ucc28 <strong>s = 18.5<\/strong><\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 \uac70\ubd81\uc774 \uac1c\uccb4\uad70\uc758 \uc2e4\uc81c \ud3c9\uade0 \uccb4\uc911\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: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#input sample size, sample mean, and sample standard deviation\n<\/span>n &lt;- 25\nxbar &lt;- 300 \ns &lt;- 18.5\n\n<span style=\"color: #008080;\">#calculate margin of error\n<\/span>margin &lt;- qt(0.975,df=n-1)*s\/sqrt(n)\n\n<span style=\"color: #008080;\">#calculate lower and upper bounds of confidence interval\n<\/span>low &lt;- xbar - margin\nlow\n\n[1] 292.3636\n\nhigh &lt;- xbar + margin\nhigh\n\n[1] 307.6364\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\uc2e4\uc81c \ud3c9\uade0 \uac70\ubd81\uc774 \uac1c\uccb4\uad70 \uccb4\uc911\uc5d0 \ub300\ud55c 95% \uc2e0\ub8b0 \uad6c\uac04\uc740 <strong>[292.36, 307.64]<\/strong> \uc785\ub2c8\ub2e4.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\uc608 2: \ud3c9\uade0 \ucc28\uc774\uc5d0 \ub300\ud55c \uc2e0\ub8b0 \uad6c\uac04<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/ko\/\u1111\u1167\u11bc\u1100\u1172\u11ab-\u1100\u1161\u11ab\u110b\u1174-\u1109\u1175\u11ab\u1105\u116c-\u1100\u116e\u1100\u1161\u11ab-\u110e\u1161\u110b\u1175\/\" target=\"_blank\" rel=\"noopener noreferrer\">\ubaa8\uc9d1\ub2e8 \ud3c9\uade0\uc758 \ucc28\uc774\uc5d0<\/a> \ub300\ud55c \uc2e0\ub8b0 \uad6c\uac04\uc744 \uacc4\uc0b0\ud558\uae30 \uc704\ud574 \ub2e4\uc74c \uacf5\uc2dd\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>\uc2e0\ub8b0 \uad6c\uac04<\/strong> = ( <span style=\"text-decoration: overline;\">x<\/span> <sub>1<\/sub> \u2013 <span style=\"text-decoration: overline;\">x<\/span> <sub>2<\/sub> ) +\/- t*\u221a((s <sub>p<\/sub> <sup>2<\/sup> \/n <sub>1<\/sub> ) + (s <sub>p<\/sub> <sup>2<\/sup> \/n <sub>2<\/sub> ))<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uae08:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><span style=\"text-decoration: overline;\">x<\/span> <sub>1<\/sub> , <span style=\"text-decoration: overline;\">x<\/span> <sub>2<\/sub> : \ud45c\ubcf8 1\uc758 \ud3c9\uade0, \ud45c\ubcf8 2\uc758 \ud3c9\uade0<\/span><\/li>\n<li> <span style=\"color: #000000;\">t: \uc2e0\ub8b0 \uc218\uc900 \ubc0f (n <sub>1<\/sub> + n <sub>2<\/sub> -2) \uc790\uc720\ub3c4\ub97c \uae30\ubc18\uc73c\ub85c \ud558\ub294 t-\uc784\uacc4 \uac12<\/span><\/li>\n<li> <span style=\"color: #000000;\">s <sub>p<\/sub> <sup>2<\/sup> : \ud569\ub3d9 \ubd84\uc0b0, ((n <sub>1<\/sub> -1)s <sub>1<\/sub> <sup>2<\/sup> + (n <sub>2<\/sub> -1)s <sub>2<\/sub> <sup>2<\/sup> ) \/ (n <sub>1<\/sub> +n <sub>2<\/sub> -2)\ub85c \uacc4\uc0b0\ub428<\/span><\/li>\n<li> <span style=\"color: #000000;\">t: t \uc784\uacc4\uac12<\/span><\/li>\n<li> <span style=\"color: #000000;\">n <sub>1<\/sub> , n <sub>2<\/sub> : \ud45c\ubcf8 \ud06c\uae30 1, \ud45c\ubcf8 \ud06c\uae30 2<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\"><strong>\uc608:<\/strong> \uc11c\ub85c \ub2e4\ub978 \ub450 \uc885\uc758 \uac70\ubd81\uc774 \uc0ac\uc774\uc758 \ud3c9\uade0 \uccb4\uc911 \ucc28\uc774\ub97c \ucd94\uc815\ud55c\ub2e4\uace0 \uac00\uc815\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \ub530\ub77c\uc11c \uc6b0\ub9ac\ub294 \uac01 \uac1c\uccb4\uad70\uc5d0\uc11c 15\ub9c8\ub9ac\uc758 \uac70\ubd81\uc774\ub97c \ubb34\uc791\uc704\ub85c \ucd94\ucd9c\ud569\ub2c8\ub2e4. \uac01 \uc0d8\ud50c\uc758 \uc694\uc57d \ub370\uc774\ud130\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>\uc0d8\ud50c 1:<\/strong><\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><span style=\"text-decoration: overline;\">x1<\/span> = <sub>310<\/sub><\/span><\/li>\n<li> <span style=\"color: #000000;\">\ucd08 <sub>1<\/sub> = 18.5<\/span><\/li>\n<li> <span style=\"color: #000000;\">n <sub>1<\/sub> = 15<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\"><strong>\uc0d8\ud50c 2:<\/strong><\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><span style=\"text-decoration: overline;\">x2<\/span> <sub>=<\/sub> 300<\/span><\/li>\n<li> <span style=\"color: #000000;\"><sub>s2<\/sub> = 16.4<\/span><\/li>\n<li> <span style=\"color: #000000;\"><sub>n2<\/sub> = 15<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 \ubaa8\uc9d1\ub2e8 \ud3c9\uade0\uc758 \uc2e4\uc81c \ucc28\uc774\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: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#input sample size, sample mean, and sample standard deviation\n<\/span>n1 &lt;- 15\nxbar1 &lt;- 310 \ns1 &lt;- 18.5\n\nn2 &lt;- 15\nxbar2 &lt;- 300\ns2 &lt;- 16.4\n\n<span style=\"color: #008080;\">#calculate pooled variance\n<span style=\"color: #000000;\">sp = ((n1-1)*s1^2 + (n2-1)*s2^2) \/ (n1+n2-2)<\/span>\n\n#calculate margin of error\n<\/span>margin &lt;- qt(0.975,df=n1+n2-1)*sqrt(sp\/n1 + sp\/n2)\n\n<span style=\"color: #008080;\">#calculate lower and upper bounds of confidence interval\n<\/span>low &lt;- (xbar1-xbar2) - margin\nlow\n\n[1] -3.055445\n\nhigh &lt;- (xbar1-xbar2) + margin\nhigh\n\n[1] 23.05544\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\ubaa8\uc9d1\ub2e8 \ud3c9\uade0 \uac04\uc758 \uc2e4\uc81c \ucc28\uc774\uc5d0 \ub300\ud55c 95% \uc2e0\ub8b0\uad6c\uac04\uc740 <strong>[-3.06, 23.06]<\/strong> \uc785\ub2c8\ub2e4.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\uc608 3: \ube44\uc728\uc5d0 \ub300\ud55c \uc2e0\ub8b0 \uad6c\uac04<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/ko\/\u1109\u1175\u11ab\u1105\u116c-\u1100\u116e\u1100\u1161\u11ab-\u1107\u1175\u110b\u1172\u11af\/\" target=\"_blank\" rel=\"noopener noreferrer\">\ube44\uc728\uc5d0 \ub300\ud55c \uc2e0\ub8b0 \uad6c\uac04\uc744<\/a> \uacc4\uc0b0\ud558\ub824\uba74 \ub2e4\uc74c \uacf5\uc2dd\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>\uc2e0\ub8b0\uad6c\uac04 = p<\/strong> <strong>+\/- z*(\u221a <span style=\"text-decoration: overline;\">p(1-p) \/ n<\/span> )<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">\uae08:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>p:<\/strong> \ud45c\ubcf8 \ube44\uc728<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>z:<\/strong> \uc120\ud0dd\ub41c z \uac12<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>n:<\/strong> \ud45c\ubcf8 \ud06c\uae30<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\"><strong>\uc608:<\/strong> \ud2b9\uc815 \ubc95\ub960\uc744 \uc120\ud638\ud558\ub294 \uce74\uc6b4\ud2f0 \uc8fc\ubbfc\uc758 \ube44\uc728\uc744 \ucd94\uc815\ud55c\ub2e4\uace0 \uac00\uc815\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc6b0\ub9ac\ub294 \uc8fc\ubbfc 100\uba85 \uc911 \ubb34\uc791\uc704 \ud45c\ubcf8\uc744 \uc120\ud0dd\ud558\uace0 \ubc95\uc5d0 \ub300\ud55c \uadf8\ub4e4\uc758 \uc785\uc7a5\uc774 \ubb34\uc5c7\uc778\uc9c0 \uc9c8\ubb38\ud569\ub2c8\ub2e4. \uacb0\uacfc\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\ud45c\ubcf8 \ud06c\uae30 <strong>n = 100<\/strong><\/span><\/li>\n<li> <span style=\"color: #000000;\">\ubc95\uce59\uc5d0 \ucc2c\uc131\ud558\ub294 \ube44\uc728 <strong>p = 0.56<\/strong><\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 \ubc95\uc744 \uc120\ud638\ud558\ub294 \uce74\uc6b4\ud2f0 \uc804\uccb4 \uc8fc\ubbfc\uc758 \uc2e4\uc81c \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: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#input sample size and sample proportion\n<\/span>n &lt;- 100\np &lt;- .56<span style=\"color: #008080;\">\n\n#calculate margin of error\n<\/span>margin &lt;- qnorm(0.975)*sqrt(p*(1-p)\/n)\n\n<span style=\"color: #008080;\">#calculate lower and upper bounds of confidence interval\n<\/span>low &lt;- p - margin\nlow\n\n[1] 0.4627099\n\nhigh &lt;- p + margin\nhigh\n\n[1] 0.6572901\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\ubc95\uc744 \uc120\ud638\ud558\ub294 \uce74\uc6b4\ud2f0 \uc804\uccb4 \uc8fc\ubbfc\uc758 \uc2e4\uc81c \ube44\uc728\uc5d0 \ub300\ud55c 95% \uc2e0\ub8b0 \uad6c\uac04\uc740 <strong>[.463, .657]<\/strong> \uc785\ub2c8\ub2e4.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\uc608 4: \ube44\uc728 \ucc28\uc774\uc5d0 \ub300\ud55c \uc2e0\ub8b0 \uad6c\uac04<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/ko\/\u1109\u1175\u11ab\u1105\u116c\u1100\u116e\u1100\u1161\u11ab-\u1107\u1175\u110b\u1172\u11af\u110b\u1174-\u110e\u1161\u110b\u1175\/\" target=\"_blank\" rel=\"noopener noreferrer\">\ube44\uc728 \ucc28\uc774\uc5d0 \ub300\ud55c \uc2e0\ub8b0 \uad6c\uac04\uc744<\/a> \uacc4\uc0b0\ud558\ub824\uba74 \ub2e4\uc74c \uacf5\uc2dd\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>\uc2e0\ub8b0 \uad6c\uac04 = (p <sub>1<\/sub> \u2013p <sub>2<\/sub> ) +\/- z*\u221a(p <sub>1<\/sub> (1-p <sub>1<\/sub> )\/n <sub>1<\/sub> + p <sub>2<\/sub> (1-p <sub>2<\/sub> )\/n <sub>2<\/sub> )<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">\uae08:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">p <sub>1<\/sub> , p <sub>2<\/sub> : \ud45c\ubcf8 1\uc758 \ube44\uc728, \ud45c\ubcf8 2\uc758 \ube44\uc728<\/span><\/li>\n<li> <span style=\"color: #000000;\">z: \uc2e0\ub8b0 \uc218\uc900\uc5d0 \ub530\ub978 z \uc784\uacc4\uac12<\/span><\/li>\n<li> <span style=\"color: #000000;\">n <sub>1<\/sub> , n <sub>2<\/sub> : \ud45c\ubcf8 \ud06c\uae30 1, \ud45c\ubcf8 \ud06c\uae30 2<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\"><strong>\uc608:<\/strong> A \uce74\uc6b4\ud2f0\uc758 \ud2b9\uc815 \ubc95\ub960\uc744 \uc9c0\uc9c0\ud558\ub294 \uc8fc\ubbfc \ube44\uc728\uacfc B \uce74\uc6b4\ud2f0\uc758 \ubc95\ub960\uc744 \uc9c0\uc9c0\ud558\ub294 \uc8fc\ubbfc \ube44\uc728 \uac04\uc758 \ucc28\uc774\ub97c \ucd94\uc815\ud55c\ub2e4\uace0 \uac00\uc815\ud569\ub2c8\ub2e4. \ub2e4\uc74c\uc740 \uac01 \uc0d8\ud50c\uc5d0 \ub300\ud55c \uc694\uc57d \ub370\uc774\ud130\uc785\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>\uc0d8\ud50c 1:<\/strong><\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">n <sub>1<\/sub> = 100<\/span><\/li>\n<li> <span style=\"color: #000000;\">p <sub>1<\/sub> = 0.62(\uc989, \uc8fc\ubbfc 100\uba85 \uc911 62\uba85\uc774 \ubc95\uc744 \uc9c0\uc9c0\ud568)<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\"><strong>\uc0d8\ud50c 2:<\/strong><\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><sub>n2<\/sub> = 100<\/span><\/li>\n<li> <span style=\"color: #000000;\">p <sub>2<\/sub> = 0.46(\uc989, \uc8fc\ubbfc 100\uba85 \uc911 46\uba85\uc774 \ubc95\uc744 \uc9c0\uc9c0\ud568)<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 \uce74\uc6b4\ud2f0 \uac04 \ubc95\uc744 \uc9c0\uc9c0\ud558\ub294 \uc8fc\ubbfc \ube44\uc728\uc758 \uc2e4\uc81c \ucc28\uc774\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: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#input sample sizes and sample proportions\n<\/span>n1 &lt;- 100\np1 &lt;- .62\n\nn2 &lt;- 100\np2 &lt;- .46<span style=\"color: #008080;\">\n\n#calculate margin of error\n<\/span>margin &lt;- qnorm(0.975)*sqrt(p1*(1-p1)\/n1 + p2*(1-p2)\/n2)\n\n<span style=\"color: #008080;\">#calculate lower and upper bounds of confidence interval\n<\/span>low &lt;- (p1-p2) - margin\nlow\n\n[1] 0.02364509\n\n\nhigh &lt;- (p1-p2) + margin\nhigh\n\n[1] 0.2963549\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\uce74\uc6b4\ud2f0 \uac04 \ubc95\uc744 \uc9c0\uc9c0\ud558\ub294 \uc8fc\ubbfc \ube44\uc728\uc758 \uc2e4\uc81c \ucc28\uc774\uc5d0 \ub300\ud55c 95% \uc2e0\ub8b0 \uad6c\uac04\uc740 <strong>[0.024, 0.296]<\/strong> \uc785\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><em><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 noreferrer\">\uc5ec\uae30\uc5d0\uc11c<\/a> \ub354 \ub9ce\uc740 R \ud29c\ud1a0\ub9ac\uc5bc\uc744 \ucc3e\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/em><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc2e0\ub8b0\uad6c\uac04\uc740 \uc77c\uc815 \uc218\uc900\uc758 \uc2e0\ub8b0\ub3c4\ub97c \uac16\ub294 \ubaa8\uc9d1\ub2e8 \ub9e4\uac1c\ubcc0\uc218\uac00 \ud3ec\ud568\ub420 \uac00\ub2a5\uc131\uc774 \uc788\ub294 \uac12\uc758 \ubc94\uc704\uc785\ub2c8\ub2e4. \uc774\ub294 \ub2e4\uc74c \uc77c\ubc18 \uacf5\uc2dd\uc5d0 \ub530\ub77c \uacc4\uc0b0\ub429\ub2c8\ub2e4. \uc2e0\ub8b0 \uad6c\uac04 = (\uc810 \ucd94\uc815\uce58) +\/- (\uc784\uacc4\uac12)* (\ud45c\uc900 \uc624\ucc28) \uc774 \uacf5\uc2dd\uc740 \ud558\ud55c\uacfc \uc0c1\ud55c\uc774 \uc788\ub294 \uad6c\uac04\uc744 \uc0dd\uc131\ud558\uba70, \uc5ec\uae30\uc5d0\ub294 \uc77c\uc815 \uc218\uc900\uc758 \uc2e0\ub8b0\ub3c4\ub97c \uac16\ub294 \ubaa8\uc9d1\ub2e8 \ubaa8\uc218\uac00 \ud3ec\ud568\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc2e0\ub8b0\uad6c\uac04 = [\ud558\ud55c, \uc0c1\ud55c] \uc774 \ud29c\ud1a0\ub9ac\uc5bc\uc5d0\uc11c\ub294 R\uc5d0\uc11c \ub2e4\uc74c \uc2e0\ub8b0 \uad6c\uac04\uc744 \uacc4\uc0b0\ud558\ub294 [&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-1227","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>R\uc5d0\uc11c \uc2e0\ub8b0 \uad6c\uac04\uc744 \ucc3e\ub294 \ubc29\ubc95(\uc608\uc81c \ud3ec\ud568)<\/title>\n<meta name=\"description\" content=\"\uc774 \ud29c\ud1a0\ub9ac\uc5bc\uc5d0\uc11c\ub294 \uba87 \uac00\uc9c0 \uc608\ub97c \ud1b5\ud574 R\uc5d0\uc11c \uc2e0\ub8b0 \uad6c\uac04\uc744 \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc744 \uc124\uba85\ud569\ub2c8\ub2e4.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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