{"id":812,"date":"2021-08-16T17:32:09","date_gmt":"2021-08-16T17:32:09","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/?post_type=chapter&#038;p=812"},"modified":"2022-01-12T17:37:01","modified_gmt":"2022-01-12T17:37:01","slug":"introduction-to-measures-of-the-spread-of-the-data","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/chapter\/introduction-to-measures-of-the-spread-of-the-data\/","title":{"raw":"Introduction to Measures of the Spread of the Data","rendered":"Introduction to Measures of the Spread of the Data"},"content":{"raw":"<h2>What you\u2019ll learn to do: calculate and interpret standard deviation and z-scores<\/h2>\r\n<img class=\"size-medium wp-image-813 alignright\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/5668\/2021\/08\/16172921\/pexels-ketut-subiyanto-4474052-300x200.jpg\" alt=\"a kid is standing on a weight scale it is shows 32 pounds\" width=\"300\" height=\"200\" \/>In addition to understanding the center of a distribution, it is helpful to know how much variation there is from the center of the distribution. Airlines might want to know the typical weight of a customer to help them predict the total weight of the customers on a plane. However, they may also want to know how much variability there is in that typical weight. Standard deviation and variance are ways to describe variability in a distribution.","rendered":"<h2>What you\u2019ll learn to do: calculate and interpret standard deviation and z-scores<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-813 alignright\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/5668\/2021\/08\/16172921\/pexels-ketut-subiyanto-4474052-300x200.jpg\" alt=\"a kid is standing on a weight scale it is shows 32 pounds\" width=\"300\" height=\"200\" \/>In addition to understanding the center of a distribution, it is helpful to know how much variation there is from the center of the distribution. Airlines might want to know the typical weight of a customer to help them predict the total weight of the customers on a plane. However, they may also want to know how much variability there is in that typical weight. Standard deviation and variance are ways to describe variability in a distribution.<\/p>\n\n\t\t\t <section class=\"citations-section\" role=\"contentinfo\">\n\t\t\t <h3>Candela Citations<\/h3>\n\t\t\t\t\t <div>\n\t\t\t\t\t\t <div id=\"citation-list-812\">\n\t\t\t\t\t\t\t <div class=\"licensing\"><div class=\"license-attribution-dropdown-subheading\">CC licensed content, Original<\/div><ul class=\"citation-list\"><li><strong>Provided by<\/strong>: Lumen Learning. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em><\/li><\/ul><div class=\"license-attribution-dropdown-subheading\">CC licensed content, Shared previously<\/div><ul class=\"citation-list\"><li>Crop kid weighing on a scale. <strong>Authored by<\/strong>: Ketut Subiyanto. <strong>Provided by<\/strong>: Pexels. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/www.pexels.com\/photo\/crop-kid-weighing-on-scale-4474052\/\">https:\/\/www.pexels.com\/photo\/crop-kid-weighing-on-scale-4474052\/<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/about\/cc0\">CC0: No Rights Reserved<\/a><\/em><\/li><\/ul><\/div>\n\t\t\t\t\t\t <\/div>\n\t\t\t\t\t <\/div>\n\t\t\t <\/section>","protected":false},"author":169134,"menu_order":33,"template":"","meta":{"_candela_citation":"[{\"type\":\"cc\",\"description\":\"Crop kid weighing on a scale\",\"author\":\"Ketut Subiyanto\",\"organization\":\"Pexels\",\"url\":\"https:\/\/www.pexels.com\/photo\/crop-kid-weighing-on-scale-4474052\/\",\"project\":\"\",\"license\":\"cc0\",\"license_terms\":\"\"},{\"type\":\"original\",\"description\":\"\",\"author\":\"\",\"organization\":\"Lumen Learning\",\"url\":\"\",\"project\":\"\",\"license\":\"cc-by\",\"license_terms\":\"\"}]","CANDELA_OUTCOMES_GUID":"","pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-812","chapter","type-chapter","status-publish","hentry"],"part":31,"_links":{"self":[{"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/chapters\/812","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/wp\/v2\/users\/169134"}],"version-history":[{"count":3,"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/chapters\/812\/revisions"}],"predecessor-version":[{"id":3323,"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/chapters\/812\/revisions\/3323"}],"part":[{"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/parts\/31"}],"metadata":[{"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/chapters\/812\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/wp\/v2\/media?parent=812"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/chapter-type?post=812"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/wp\/v2\/contributor?post=812"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/wp\/v2\/license?post=812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}