{"id":524,"date":"2014-02-20T15:10:41","date_gmt":"2014-02-20T20:10:41","guid":{"rendered":"http:\/\/homepages.uc.edu\/~yaozo\/wordpress\/?p=524"},"modified":"2014-02-20T15:10:41","modified_gmt":"2014-02-20T20:10:41","slug":"confirmatory-vs-exploratory-data-analysis","status":"publish","type":"post","link":"https:\/\/zhuoyao.net\/index.php\/2014\/02\/20\/confirmatory-vs-exploratory-data-analysis\/","title":{"rendered":"Confirmatory vs Exploratory Data Analysis"},"content":{"rendered":"<p>Confirmatory vs Exploratory Data Analysis<\/p>\n<ul>\n<li>\n<h2>Confirmatory Analysis<\/h2>\n<ul>\n<li>Inferential Statistics &#8211; Deductive Approach\n<ul>\n<li>Heavy reliance on probability models<\/li>\n<li>Must accept untestable assumptions<\/li>\n<li>Look for definite answers to specific questions<\/li>\n<li>Emphasis on numerical calculations<\/li>\n<li>Hypotheses determined at outset<\/li>\n<li>Hypothesis tests and formal confidence interval estimation<\/li>\n<\/ul>\n<\/li>\n<li>Advantages\n<ul>\n<li>Provide precise information in the right circumstances<\/li>\n<li>Well-established theory and methods<\/li>\n<\/ul>\n<\/li>\n<li>Disadvantages\n<ul>\n<li>Misleading impression of precision in less than ideal circumstances<\/li>\n<li>Analysis driven by preconceived ideas<\/li>\n<li>Difficult to notice unexpected results<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li>\n<h2>Exploratory Analysis<\/h2>\n<ul>\n<li>Descriptive Statistics &#8211; Inductive Approach\n<ul>\n<li>Look for flexible ways to examine data without preconceptions<\/li>\n<li>Attempt to evaluate validity of assumptions<\/li>\n<li>Heavy reliance on graphical displays<\/li>\n<li>Let data suggest questions<\/li>\n<li>Focus on indications and approximate error magnitudes<\/li>\n<\/ul>\n<\/li>\n<li>Advantages\n<ul>\n<li>Flexible ways to generate hypotheses<\/li>\n<li>More realistic statements of accuracy<\/li>\n<li>Does not require more than data can support<\/li>\n<li>Promotes deeper understanding of processes\n<ul>\n<li>Statistical learning<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>Disadvantages\n<ul>\n<li>Usually does not provide definitive answers<\/li>\n<li>Difficult to avoid optimistic bias produced by overfitting<\/li>\n<li>Requires judgement and artistry &#8211; can&#8217;t be cookbooked<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Confirmatory vs Exploratory Data Analysis Confirmatory Analysis Inferential Statistics &#8211; Deductive Approach Heavy reliance on probability models Must accept untestable assumptions Look for definite answers&hellip; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21],"tags":[],"class_list":["post-524","post","type-post","status-publish","format-standard","hentry","category-research"],"_links":{"self":[{"href":"https:\/\/zhuoyao.net\/index.php\/wp-json\/wp\/v2\/posts\/524","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zhuoyao.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zhuoyao.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zhuoyao.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zhuoyao.net\/index.php\/wp-json\/wp\/v2\/comments?post=524"}],"version-history":[{"count":0,"href":"https:\/\/zhuoyao.net\/index.php\/wp-json\/wp\/v2\/posts\/524\/revisions"}],"wp:attachment":[{"href":"https:\/\/zhuoyao.net\/index.php\/wp-json\/wp\/v2\/media?parent=524"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zhuoyao.net\/index.php\/wp-json\/wp\/v2\/categories?post=524"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zhuoyao.net\/index.php\/wp-json\/wp\/v2\/tags?post=524"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}