{"id":24383,"date":"2022-12-02T14:15:42","date_gmt":"2022-12-02T08:45:42","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-determine-if-data-is-related-in-r-closed\/"},"modified":"2022-12-02T14:15:42","modified_gmt":"2022-12-02T08:45:42","slug":"solved-determine-if-data-is-related-in-r-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-determine-if-data-is-related-in-r-closed\/","title":{"rendered":"[Solved] Determine if data is related in R [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-37685191\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"37685191\" data-parentid=\"37684485\" data-score=\"1\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>Lets assume that<\/p>\n<pre><code>set.seed(44) \ndeaths&lt;- 10:1 + sample.int(3, 10, replace = T)\n<\/code><\/pre>\n<p>and<\/p>\n<pre><code>spent&lt;- seq(100, 550, by = 50 )\n<\/code><\/pre>\n<p>The very first thing you want to do when you get your data is literally to look at it. This can be done relatively painlessly with <\/p>\n<pre><code>plot(spent, deaths)\n<\/code><\/pre>\n<p>which yields<\/p>\n<p><a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/jassweb.com\/solved\/wp-content\/uploads\/2022\/12\/Solved-Determine-if-data-is-related-in-R-closed.png\"><img decoding=\"async\" src=\"https:\/\/jassweb.com\/solved\/wp-content\/uploads\/2022\/12\/Solved-Determine-if-data-is-related-in-R-closed.png\" alt=\"enter image description here\"><\/a><\/p>\n<p>So it looks like the more we spend, the less deaths there are. That makes sense. But how can we quantify that statement. Using <code>cor()<\/code> will give us the correlation between the two variables <code>spent<\/code> and <code>deaths<\/code>.<\/p>\n<pre><code>cor(spent, deaths)\n# [1] -0.9809581\n<\/code><\/pre>\n<p>So it looks like they are very strong (and negatively correlated.) One other simple method (that is closely related to <code>cor()<\/code>) is to fit a linear model.<\/p>\n<pre><code>model&lt;- lm(deaths~spent)\n<\/code><\/pre>\n<p>The <code>summary()<\/code> call yields a lot of useful information about the model you just fit, the interpretation of which is beyond the scope of this post, but can be readily found with some quick Googling.<\/p>\n<pre><code>summary(model) \n\n#Call:\n#lm(formula = deaths ~ spent)\n\n#Residuals:\n# Min       1Q   Median       3Q      Max \n#-0.89697 -0.51515 -0.05758  0.46364  1.01818 \n\n#Coefficients:\n#            Estimate Std. Error t value Pr(&gt;|t|)    \n#(Intercept) 14.151515   0.539649   26.22 4.80e-09 ***\n#spent       -0.021697   0.001519  -14.29 5.62e-07 ***\n#---\n#Signif. codes:  0 \u2018***\u2019 0.001 \u2018**\u2019 0.01 \u2018*\u2019 0.05 \u2018.\u2019 0.1 \u2018 \u2019 1\n\n#Residual standard error: 0.6898 on 8 degrees of freedom\n#Multiple R-squared:  0.9623,   Adjusted R-squared:  0.9576 \n#F-statistic: 204.1 on 1 and 8 DF,  p-value: 5.622e-07\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\"><\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Determine if data is related in R [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] Lets assume that set.seed(44) deaths&lt;- 10:1 + sample.int(3, 10, replace = T) and spent&lt;- seq(100, 550, by = 50 ) The very first thing you want to do when you get your data is literally to look at it. This can be done relatively painlessly with plot(spent, deaths) which yields So it looks like &#8230; <a title=\"[Solved] Determine if data is related in R [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-determine-if-data-is-related-in-r-closed\/\" aria-label=\"More on [Solved] Determine if data is related in R [closed]\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[947,321,1030],"class_list":["post-24383","post","type-post","status-publish","format-standard","hentry","category-solved","tag-comparison","tag-r","tag-statistics"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Determine if data is related in R [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-determine-if-data-is-related-in-r-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Determine if data is related in R [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Lets assume that set.seed(44) deaths&lt;- 10:1 + sample.int(3, 10, replace = T) and spent&lt;- seq(100, 550, by = 50 ) The very first thing you want to do when you get your data is literally to look at it. 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