{"id":502,"date":"2023-02-27T17:26:39","date_gmt":"2023-02-27T17:26:39","guid":{"rendered":"https:\/\/content.one.lumenlearning.com\/introstatstest\/?post_type=chapter&#038;p=502"},"modified":"2025-01-15T19:30:56","modified_gmt":"2025-01-15T19:30:56","slug":"statistical-studies-fresh-take","status":"publish","type":"chapter","link":"https:\/\/content.one.lumenlearning.com\/introstatstest\/chapter\/statistical-studies-fresh-take\/","title":{"raw":"Statistical Studies: Fresh Take","rendered":"Statistical Studies: Fresh Take"},"content":{"raw":"<section class=\"textbox learningGoals\">\r\n<ul>\r\n\t<li>Identify the subject, case, and observational unit of a statistical study<\/li>\r\n\t<li>Name and classify variables by type<\/li>\r\n<\/ul>\r\n<\/section>\r\n<h2>Population, Sample, Parameters, and Statistics<\/h2>\r\n<section class=\"textbox recall\">\r\n<p><strong>Samples<\/strong> are subgroups of individuals collected from a <strong>population<\/strong> of individuals.<\/p>\r\n<p>A <strong>parameter<\/strong> is a numerical summary of a characteristic (<strong>variable of interest<\/strong>) of a\u00a0<strong>population.<\/strong><\/p>\r\n<p style=\"padding-left: 30px;\">Ex. 40% of all Americans aged 18 - 24 are enrolled in college[footnote]<a href=\"https:\/\/nces.ed.gov\/programs\/coe\/indicator\/cpb\/college-enrollment-rate\">https:\/\/nces.ed.gov\/programs\/coe\/indicator\/cpb\/college-enrollment-rate<\/a>[\/footnote]. The population parameter is 40%.<\/p>\r\n<div style=\"font-weight: 400;\">\r\n<p>A <strong>statistic<\/strong> is a numerical summary of a <strong>sample<\/strong>.<\/p>\r\n<\/div>\r\n<div style=\"font-weight: 400;\">\r\n<p style=\"padding-left: 30px;\">Ex. Suppose a random sample of 100 Americans aged 18 - 24 is taken; 35 of them are enrolled in college. The statistic is [latex]\\dfrac{35}{100}=35\\%[\/latex].<\/p>\r\n<\/div>\r\n<p>Just remember...<\/p>\r\n<p style=\"text-align: left;\"><strong>P<\/strong>arameters are associated with <strong>P<\/strong>opulations.<br \/>\r\n<strong>S<\/strong>tatistics are associated with <strong>S<\/strong>amples.<\/p>\r\n<\/section>\r\n<section class=\"textbox watchIt\">\r\n<p><iframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/MYjgfoNAKkk\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\r\n<\/section>\r\n<p>&nbsp;<\/p>","rendered":"<section class=\"textbox learningGoals\">\n<ul>\n<li>Identify the subject, case, and observational unit of a statistical study<\/li>\n<li>Name and classify variables by type<\/li>\n<\/ul>\n<\/section>\n<h2>Population, Sample, Parameters, and Statistics<\/h2>\n<section class=\"textbox recall\">\n<p><strong>Samples<\/strong> are subgroups of individuals collected from a <strong>population<\/strong> of individuals.<\/p>\n<p>A <strong>parameter<\/strong> is a numerical summary of a characteristic (<strong>variable of interest<\/strong>) of a\u00a0<strong>population.<\/strong><\/p>\n<p style=\"padding-left: 30px;\">Ex. 40% of all Americans aged 18 &#8211; 24 are enrolled in college<a class=\"footnote\" title=\"https:\/\/nces.ed.gov\/programs\/coe\/indicator\/cpb\/college-enrollment-rate\" id=\"return-footnote-502-1\" href=\"#footnote-502-1\" aria-label=\"Footnote 1\"><sup class=\"footnote\">[1]<\/sup><\/a>. The population parameter is 40%.<\/p>\n<div style=\"font-weight: 400;\">\n<p>A <strong>statistic<\/strong> is a numerical summary of a <strong>sample<\/strong>.<\/p>\n<\/div>\n<div style=\"font-weight: 400;\">\n<p style=\"padding-left: 30px;\">Ex. Suppose a random sample of 100 Americans aged 18 &#8211; 24 is taken; 35 of them are enrolled in college. The statistic is [latex]\\dfrac{35}{100}=35\\%[\/latex].<\/p>\n<\/div>\n<p>Just remember&#8230;<\/p>\n<p style=\"text-align: left;\"><strong>P<\/strong>arameters are associated with <strong>P<\/strong>opulations.<br \/>\n<strong>S<\/strong>tatistics are associated with <strong>S<\/strong>amples.<\/p>\n<\/section>\n<section class=\"textbox watchIt\">\n<p><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/MYjgfoNAKkk\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<\/section>\n<p>&nbsp;<\/p>\n<hr class=\"before-footnotes clear\" \/><div class=\"footnotes\"><ol><li id=\"footnote-502-1\"><a href=\"https:\/\/nces.ed.gov\/programs\/coe\/indicator\/cpb\/college-enrollment-rate\">https:\/\/nces.ed.gov\/programs\/coe\/indicator\/cpb\/college-enrollment-rate<\/a> <a href=\"#return-footnote-502-1\" class=\"return-footnote\" aria-label=\"Return to footnote 1\">&crarr;<\/a><\/li><\/ol><\/div>","protected":false},"author":13,"menu_order":19,"template":"","meta":{"_candela_citation":"[]","pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"part":375,"module-header":"fresh_take","content_attributions":[],"internal_book_links":[],"video_content":null,"cc_video_embed_content":{"cc_scripts":"","media_targets":[]},"try_it_collection":null,"_links":{"self":[{"href":"https:\/\/content.one.lumenlearning.com\/introstatstest\/wp-json\/pressbooks\/v2\/chapters\/502"}],"collection":[{"href":"https:\/\/content.one.lumenlearning.com\/introstatstest\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/content.one.lumenlearning.com\/introstatstest\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/content.one.lumenlearning.com\/introstatstest\/wp-json\/wp\/v2\/users\/13"}],"version-history":[{"count":7,"href":"https:\/\/content.one.lumenlearning.com\/introstatstest\/wp-json\/pressbooks\/v2\/chapters\/502\/revisions"}],"predecessor-version":[{"id":4214,"href":"https:\/\/content.one.lumenlearning.com\/introstatstest\/wp-json\/pressbooks\/v2\/chapters\/502\/revisions\/4214"}],"part":[{"href":"https:\/\/content.one.lumenlearning.com\/introstatstest\/wp-json\/pressbooks\/v2\/parts\/375"}],"metadata":[{"href":"https:\/\/content.one.lumenlearning.com\/introstatstest\/wp-json\/pressbooks\/v2\/chapters\/502\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/content.one.lumenlearning.com\/introstatstest\/wp-json\/wp\/v2\/media?parent=502"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/content.one.lumenlearning.com\/introstatstest\/wp-json\/pressbooks\/v2\/chapter-type?post=502"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/content.one.lumenlearning.com\/introstatstest\/wp-json\/wp\/v2\/contributor?post=502"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/content.one.lumenlearning.com\/introstatstest\/wp-json\/wp\/v2\/license?post=502"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}