{"id":671,"date":"2023-07-29T03:44:10","date_gmt":"2023-07-29T03:44:10","guid":{"rendered":"https:\/\/statorials.org\/cn\/%e7%bb%98%e5%88%b6%e4%ba%8c%e9%a1%b9%e5%bc%8f%e5%88%86%e5%b8%83-r\/"},"modified":"2023-07-29T03:44:10","modified_gmt":"2023-07-29T03:44:10","slug":"%e7%bb%98%e5%88%b6%e4%ba%8c%e9%a1%b9%e5%bc%8f%e5%88%86%e5%b8%83-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/cn\/%e7%bb%98%e5%88%b6%e4%ba%8c%e9%a1%b9%e5%bc%8f%e5%88%86%e5%b8%83-r\/","title":{"rendered":"\u5982\u4f55\u5728 r \u4e2d\u7ed8\u5236\u4e8c\u9879\u5f0f\u5206\u5e03"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u8981\u7ed8\u5236 R \u4e2d<a href=\"https:\/\/statorials.org\/cn\/\u4e8c\u9879\u5206\u5e03-1\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u4e8c\u9879\u5f0f\u5206\u5e03\u7684<\/a>\u6982\u7387\u8d28\u91cf\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u51fd\u6570\uff1a<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>dbinom(x, size, prob)<\/strong>\u521b\u5efa\u6982\u7387\u8d28\u91cf\u51fd\u6570<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>plot(x, y, type = &#8216;h&#8217;)<\/strong>\u7ed8\u5236\u6982\u7387\u8d28\u91cf\u51fd\u6570\uff0c\u6307\u5b9a\u8be5\u56fe\u662f\u76f4\u65b9\u56fe (type=&#8217;h&#8217;)<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">\u8981\u7ed8\u5236\u6982\u7387\u8d28\u91cf\u51fd\u6570\uff0c\u53ea\u9700\u6307\u5b9a<strong>\u5927\u5c0f<\/strong><strong>&nbsp;<\/strong> <strong>dbinom()<\/strong>\u51fd\u6570\u4e2d\u7684\uff08\u4f8b\u5982\u8bd5\u9a8c\u6b21\u6570\uff09\u548c<strong>prob<\/strong> \uff08\u4f8b\u5982\u7ed9\u5b9a\u8bd5\u9a8c\u7684\u6210\u529f\u6982\u7387\uff09\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u8bf4\u660e\u4e86\u5982\u4f55\u7ed8\u5236\u5927\u5c0f = 20 \u4e14\u6982\u7387 = 0.3 \u7684\u4e8c\u9879\u5f0f\u5206\u5e03\u7684\u6982\u7387\u8d28\u91cf\u51fd\u6570\uff1a<\/span> <\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong>success &lt;- 0:20\n\nplot(success, dbinom(success, size=20, prob=.3), type='h')\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-6446 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/binomer1.png\" alt=\"\u5728 R \u4e2d\u7ed8\u5236\u4e8c\u9879\u5206\u5e03\u6982\u7387\u8d28\u91cf\u51fd\u6570\" width=\"421\" height=\"387\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">x \u8f74\u663e\u793a\u6210\u529f\u6b21\u6570\uff0cy \u8f74\u663e\u793a\u5728 20 \u6b21\u8bd5\u9a8c\u4e2d\u83b7\u5f97\u8be5\u6210\u529f\u6b21\u6570\u7684\u6982\u7387\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6211\u4eec\u53ef\u4ee5\u6dfb\u52a0\u6807\u9898\u3001\u66f4\u6539\u8f74\u6807\u7b7e\u5e76\u589e\u52a0\u7ebf\u6761\u5bbd\u5ea6\u4ee5\u4f7f\u7ed8\u56fe\u66f4\u52a0\u7f8e\u89c2\uff1a<\/span> <\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong>success &lt;- 0:20\n\nplot(success,dbinom(success,size=20,prob=.3),\n     type='h',\n     main='Binomial Distribution (n=20, p=0.3)',\n     ylab='Probability',\n     xlab ='# Successes',\n     lwd=3)\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-6447 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/binomer2.png\" alt=\"\u4e8c\u9879\u5f0f\u5206\u5e03\u53ef\u80fd\u5728 R \u4e2d\u7ed8\u5236\u8d28\u91cf\u51fd\u6570\" width=\"420\" height=\"414\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p><span style=\"color: #000000;\">\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u6765\u83b7\u53d6\u56fe\u8868\u4e2d\u663e\u793a\u7684\u6bcf\u4e2a\u6210\u529f\u6b21\u6570\u7684\u5b9e\u9645\u6982\u7387\uff1a<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#prevent R from displaying numbers in scientific notation<\/span>\noptions(scipen=999) \n\n<span style=\"color: #008080;\">#define range of successes\n<\/span>success &lt;- 0:20\n\n<span style=\"color: #008080;\">#display probability of success for each number of trials\n<\/span>dbinom(success, size=20, prob=.3)\n\n[1] 0.00079792266297612 0.00683933711122388 0.02784587252426865\n[4] 0.07160367220526231 0.13042097437387065 0.17886305056987975\n[7] 0.19163898275344257 0.16426198521723651 0.11439673970486122\n[10] 0.06536956554563482 0.03081708090008504 0.01200665489613703\n[13] 0.00385928193090119 0.00101783259716075 0.00021810698510587\n[16] 0.00003738976887529 0.00000500755833151 0.00000050496386536\n[19] 0.00000003606884753 0.00000000162716605 0.00000000003486784\n<\/strong><\/pre>\n<h3><span style=\"color: #000000;\"><strong>\u5176\u4ed6\u8d44\u6e90<\/strong><\/span><\/h3>\n<p><a href=\"https:\/\/statorials.org\/cn\/\u4e8c\u9879\u5206\u5e03-1\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u4e8c\u9879\u5206\u5e03\u7b80\u4ecb<\/a><br \/><a href=\"https:\/\/statorials.org\/cn\/\u4e8c\u9879\u5f0f\u5206\u5e03\u5f62\u5f0f\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u4e86\u89e3\u4e8c\u9879\u5f0f\u5206\u5e03\u7684\u5f62\u72b6<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8981\u7ed8\u5236 R \u4e2d\u4e8c\u9879\u5f0f\u5206\u5e03\u7684\u6982\u7387\u8d28\u91cf\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u51fd\u6570\uff1a dbinom(x, size, prob)\u521b\u5efa [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-671","post","type-post","status-publish","format-standard","hentry","category-11"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5982\u4f55\u5728 R \u4e2d\u7ed8\u5236\u4e8c\u9879\u5f0f\u5206\u5e03 - Statorials<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u5982\u4f55\u5728 R \u4e2d\u7ed8\u5236\u4e8c\u9879\u5f0f\u5206\u5e03\u7684\u7b80\u5355\u8bf4\u660e\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/cn\/\u7ed8\u5236\u4e8c\u9879\u5f0f\u5206\u5e03-r\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta 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