{"id":21679,"date":"2017-06-04T13:55:36","date_gmt":"2017-06-04T13:55:36","guid":{"rendered":"http:\/\/www.oracletutoring.ca\/blog\/?p=21679"},"modified":"2017-06-04T13:57:34","modified_gmt":"2017-06-04T13:57:34","slug":"statistics-distribution-shape-skew","status":"publish","type":"post","link":"https:\/\/www.oracletutoring.ca\/blog\/statistics-distribution-shape-skew\/","title":{"rendered":"Statistics:  distribution shape:  skew"},"content":{"rendered":"<h1>Tutoring statistics, the concept of skew arises.  The tutor gives some brief ideas about skew.<\/h1>\n<p>The normal distribution isn&#8217;t skewed, because its left and right tails are simply mirror images of each other.<\/p>\n<p>When a distribution&#8217;s left tail is longer than its right, we say that distribution is negatively skewed. In such a case you get a long left tail that ramps up to a clump of values on the right.<\/p>\n<p>The opposite is true for a positively skewed distribution; most of the population is clumped to the left, but a long tail extends to the right.<\/p>\n<p>Therefore, skew describes the location of the distribution&#8217;s longer tail:  negative skew means long tail to the left (the negative) side, whereas positive skew means long tail to the right (positive) side.<\/p>\n<p>HTH:)<\/p>\n<p>Source:<\/p>\n<p>Harnett, Donald L. and James L. Murphy.  <i>Statistical Analysis for Business and Economics<\/i>, 3rd ed.  Don Mills:  Addison-Wesley, 1986.<\/p>\n<p>Jack of <a href=\"https:\/\/www.oracletutoring.ca\">Oracle Tutoring by Jack and Diane,<\/a> Campbell River, BC.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tutoring statistics, the concept of skew arises. The tutor gives some brief ideas about skew. The normal distribution isn&#8217;t skewed, because its left and right tails are simply mirror images of each other. When a distribution&#8217;s left tail is longer &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"more-link\" href=\"https:\/\/www.oracletutoring.ca\/blog\/statistics-distribution-shape-skew\/\"> <span class=\"screen-reader-text\">Statistics:  distribution shape:  skew<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[2348],"class_list":["post-21679","post","type-post","status-publish","format-standard","hentry","category-statistics","tag-what-is-positive-skew-what-is-negative-skew"],"_links":{"self":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/21679","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/comments?post=21679"}],"version-history":[{"count":6,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/21679\/revisions"}],"predecessor-version":[{"id":21685,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/21679\/revisions\/21685"}],"wp:attachment":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/media?parent=21679"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/categories?post=21679"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/tags?post=21679"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}