{"id":27989,"date":"2019-02-08T21:11:20","date_gmt":"2019-02-08T13:11:20","guid":{"rendered":"http:\/\/people.utm.my\/nurazaliah\/?p=27989"},"modified":"2019-02-09T21:17:20","modified_gmt":"2019-02-09T13:17:20","slug":"correlation-analysis","status":"publish","type":"post","link":"https:\/\/people.utm.my\/nurazaliah\/2019\/02\/08\/correlation-analysis\/","title":{"rendered":"Correlation analysis"},"content":{"rendered":"<p style=\"text-align: center\"><strong>Correlation analysis<\/strong> is a statistical technique that allows you <strong>to determine whether there is a relationship between two separate variables and how strong that relationship\u00a0may be<\/strong>. This type of analysis is only appropriate if the data is <strong>quantified and represented\u00a0by a number.<\/strong> It <strong>can\u2019t be used for categorical data, such as gender, brands purchased,\u00a0or colour.<\/strong> The analysis produces a single number between 11 and 21 that describes the\u00a0degree of relationship between two variables.<strong> If the result is positive then the two\u00a0variables are positively correlated to each other<\/strong>, i.e. when one is high, the other one\u00a0tends to be high too. If the result is negative then the two variables are negatively\u00a0correlated to each other, i.e. when one is high, the other one tends to be low.<\/p>\n<p style=\"text-align: center\">So, for example, if (as a hypothetical example) correlation analysis discovered\u00a0that there was a correlation of 10.73 between height and IQ then the taller someone was the higher the likelihood is that they also have a higher IQ. Conversely, if that\u00a0correlation was discovered to be 0.64 then the taller someone was the more likely\u00a0he or she was also to have a low IQ.\u00a0A positive score denotes direct correlation whereas a negative score denotes\u00a0inverse correlation. And zero means there is no correlation between the two variables.\u00a0<strong>The closer the score is towards 1 \u2013 either positive or negative \u2013 the stronger\u00a0the correlation is<\/strong>. The result is considered <strong>\u2018statistically significant\u2019, i.e. important\u00a0enough to pay attention to if the result is 0.5 or above in either direction.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Correlation analysis is a statistical technique that allows you to determine whether there is a relationship between two separate variables and how strong that relationship\u00a0may be. This type of analysis is only appropriate if the data is quantified and represented\u00a0by a number. It can\u2019t be used for categorical data, such as gender, brands purchased,\u00a0or colour. [&hellip;]<\/p>\n","protected":false},"author":6541,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-27989","post","type-post","status-publish","format-standard","hentry","category-howto"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/people.utm.my\/nurazaliah\/wp-json\/wp\/v2\/posts\/27989","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/people.utm.my\/nurazaliah\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/people.utm.my\/nurazaliah\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/people.utm.my\/nurazaliah\/wp-json\/wp\/v2\/users\/6541"}],"replies":[{"embeddable":true,"href":"https:\/\/people.utm.my\/nurazaliah\/wp-json\/wp\/v2\/comments?post=27989"}],"version-history":[{"count":2,"href":"https:\/\/people.utm.my\/nurazaliah\/wp-json\/wp\/v2\/posts\/27989\/revisions"}],"predecessor-version":[{"id":27991,"href":"https:\/\/people.utm.my\/nurazaliah\/wp-json\/wp\/v2\/posts\/27989\/revisions\/27991"}],"wp:attachment":[{"href":"https:\/\/people.utm.my\/nurazaliah\/wp-json\/wp\/v2\/media?parent=27989"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/people.utm.my\/nurazaliah\/wp-json\/wp\/v2\/categories?post=27989"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/people.utm.my\/nurazaliah\/wp-json\/wp\/v2\/tags?post=27989"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}