{"id":715,"date":"2021-08-13T18:38:18","date_gmt":"2021-08-13T18:38:18","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/?post_type=chapter&#038;p=715"},"modified":"2022-01-11T17:28:39","modified_gmt":"2022-01-11T17:28:39","slug":"introduction-to-experimental-design-and-ethics","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/chapter\/introduction-to-experimental-design-and-ethics\/","title":{"raw":"Introduction to Experimental Design and Ethics","rendered":"Introduction to Experimental Design and Ethics"},"content":{"raw":"<h2>What you'll learn to do: how to identify variables within an experiment and collect reliable data<\/h2>\r\n<img class=\"wp-image-716 alignleft\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/5668\/2021\/08\/13183645\/pexels-tim-samuel-5834976-200x300.jpg\" alt=\"a man driving a taxi\" width=\"120\" height=\"180\" \/>\r\n\r\nDoes adding seat belts to cars reduce the proportion of injuries in car accidents? To determine if this was true, experiments were done with cars and crash test dummies. Experiments that are conducted using good elements of experimental design allow us to draw conclusions about cause and effect. This section will introduce you to several concepts related to experimental design including random assignment, control groups, blinding, and the use of placebos.","rendered":"<h2>What you&#8217;ll learn to do: how to identify variables within an experiment and collect reliable data<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-716 alignleft\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/5668\/2021\/08\/13183645\/pexels-tim-samuel-5834976-200x300.jpg\" alt=\"a man driving a taxi\" width=\"120\" height=\"180\" \/><\/p>\n<p>Does adding seat belts to cars reduce the proportion of injuries in car accidents? To determine if this was true, experiments were done with cars and crash test dummies. Experiments that are conducted using good elements of experimental design allow us to draw conclusions about cause and effect. This section will introduce you to several concepts related to experimental design including random assignment, control groups, blinding, and the use of placebos.<\/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-715\">\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>Confident ethnic man fastening seat belt in yellow taxi. <strong>Authored by<\/strong>: Tim Samuel. <strong>Provided by<\/strong>: Pexels. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/www.pexels.com\/photo\/confident-ethnic-man-fastening-seat-belt-in-yellow-taxi-5834976\/\">https:\/\/www.pexels.com\/photo\/confident-ethnic-man-fastening-seat-belt-in-yellow-taxi-5834976\/<\/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":20,"template":"","meta":{"_candela_citation":"[{\"type\":\"cc\",\"description\":\"Confident ethnic man fastening seat belt in yellow taxi\",\"author\":\"Tim Samuel\",\"organization\":\"Pexels\",\"url\":\"https:\/\/www.pexels.com\/photo\/confident-ethnic-man-fastening-seat-belt-in-yellow-taxi-5834976\/\",\"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-715","chapter","type-chapter","status-publish","hentry"],"part":23,"_links":{"self":[{"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/chapters\/715","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":7,"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/chapters\/715\/revisions"}],"predecessor-version":[{"id":3242,"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/chapters\/715\/revisions\/3242"}],"part":[{"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/parts\/23"}],"metadata":[{"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/chapters\/715\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/wp\/v2\/media?parent=715"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/chapter-type?post=715"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/wp\/v2\/contributor?post=715"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/wp\/v2\/license?post=715"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}