{"id":500,"date":"2022-05-18T16:40:01","date_gmt":"2022-05-18T16:40:01","guid":{"rendered":"https:\/\/pressbooks.ccconline.org\/accintrostats\/chapter\/regression-textbook-cost\/"},"modified":"2022-11-09T16:04:29","modified_gmt":"2022-11-09T16:04:29","slug":"regression-textbook-cost","status":"publish","type":"chapter","link":"https:\/\/pressbooks.ccconline.org\/accintrostats\/chapter\/regression-textbook-cost\/","title":{"raw":"Activity 3.7: Regression (Textbook Cost)","rendered":"Activity 3.7: Regression (Textbook Cost)"},"content":{"raw":"&nbsp;\r\n<div id=\"fs-id1172137875645\" class=\"statistics lab\" data-type=\"note\" data-has-label=\"true\" data-label=\"\">\r\n<div data-type=\"title\">Regression (Textbook Cost)<\/div>\r\n<p id=\"fs-idm90448\">Class Time:<\/p>\r\n<p id=\"fs-idp162776560\">Names:<\/p>\r\n\r\n<div id=\"fs-idp101503968\" data-type=\"list\">\r\n<div data-type=\"title\">Student Learning Outcomes<\/div>\r\n<ul>\r\n \t<li>The student will calculate and construct the line of best fit between two variables.<\/li>\r\n \t<li>The student will evaluate the relationship between two variables to determine if that relationship is significant.<\/li>\r\n<\/ul>\r\n<\/div>\r\n<p id=\"fs-idp70571712\"><span data-type=\"title\">Collect the Data<\/span> Survey ten textbooks. Collect bivariate data (number of pages in a textbook, the cost of the textbook).<\/p>\r\n\r\n<ol id=\"fs-idp53322144\">\r\n \t<li>Complete the table.\r\n<table id=\"fs-idm40594000\" summary=\"The blank table has number of pages in the first column and cost of textbook in the second column. 20 empty cells.\">\r\n<thead>\r\n<tr>\r\n<th>Number of pages<\/th>\r\n<th>Cost of textbook<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td><\/td>\r\n<td><\/td>\r\n<\/tr>\r\n<tr>\r\n<td><\/td>\r\n<td><\/td>\r\n<\/tr>\r\n<tr>\r\n<td><\/td>\r\n<td><\/td>\r\n<\/tr>\r\n<tr>\r\n<td><\/td>\r\n<td><\/td>\r\n<\/tr>\r\n<tr>\r\n<td><\/td>\r\n<td><\/td>\r\n<\/tr>\r\n<tr>\r\n<td><\/td>\r\n<td><\/td>\r\n<\/tr>\r\n<tr>\r\n<td><\/td>\r\n<td><\/td>\r\n<\/tr>\r\n<tr>\r\n<td><\/td>\r\n<td><\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/li>\r\n \t<li>Which variable should be the dependent variable and which should be the independent variable? Why?<\/li>\r\n \t<li>Graph \u201cpages\u201d vs. \u201ccost.\u201d Plot the points on the graph in <a href=\"#fs-idm37313136\">Analyze the Data<\/a>. Label both axes with words. Scale both axes.<\/li>\r\n<\/ol>\r\n<p id=\"fs-idm37313136\"><span data-type=\"title\">Analyze the Data<\/span> Enter your data into your calculator or computer. Write the linear equation, rounding to four decimal places.<\/p>\r\n\r\n<ol id=\"fs-idm130060688\">\r\n \t<li>Calculate the following:\r\n<ol id=\"fs-idm69177152\" type=\"a\">\r\n \t<li><em data-effect=\"italics\">a<\/em> = ______<\/li>\r\n \t<li><em data-effect=\"italics\">b<\/em> = ______<\/li>\r\n \t<li>correlation = ______<\/li>\r\n \t<li><em data-effect=\"italics\">n<\/em> = ______<\/li>\r\n \t<li>equation: <em data-effect=\"italics\">y<\/em> = ______<\/li>\r\n \t<li>Is the correlation significant? Why or why not? (Answer in complete sentences.)<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t<li>Supply an answer for the following senarios:\r\n<ol id=\"fs-idp3298784\" type=\"a\">\r\n \t<li>For a textbook with 400 pages, predict the cost.<\/li>\r\n \t<li>For a textbook with 600 pages, predict the cost.<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t<li>Obtain the graph on your calculator or computer. Sketch the regression line.\r\n<div id=\"id19863024\" class=\"bc-figure figure\"><span id=\"id20268459\" data-type=\"media\" data-alt=\"Blank graph with vertical and horizontal axes.\"><img src=\"https:\/\/pressbooks.ccconline.org\/acccomposition1\/wp-content\/uploads\/sites\/83\/2022\/05\/fig-ch12_15_01-1.png\" alt=\"Blank graph with vertical and horizontal axes.\" width=\"380\" data-media-type=\"image\/png\" \/><\/span><\/div><\/li>\r\n<\/ol>\r\n<div id=\"fs-idp7458256\" data-type=\"list\">\r\n<div data-type=\"title\">Discussion Questions<\/div>\r\n<ol>\r\n \t<li>Answer each question in complete sentences.\r\n<ol id=\"fs-idm37663456\" type=\"a\">\r\n \t<li>Does the line seem to fit the data? Why?<\/li>\r\n \t<li>What does the correlation imply about the relationship between the number of pages and the cost?<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t<li>Are there any outliers? If so, which point(s) is an outlier?<\/li>\r\n \t<li>Should the outlier, if it exists, be removed? Why or why not?<\/li>\r\n<\/ol>\r\n<\/div>\r\n<\/div>","rendered":"<p>&nbsp;<\/p>\n<div id=\"fs-id1172137875645\" class=\"statistics lab\" data-type=\"note\" data-has-label=\"true\" data-label=\"\">\n<div data-type=\"title\">Regression (Textbook Cost)<\/div>\n<p id=\"fs-idm90448\">Class Time:<\/p>\n<p id=\"fs-idp162776560\">Names:<\/p>\n<div id=\"fs-idp101503968\" data-type=\"list\">\n<div data-type=\"title\">Student Learning Outcomes<\/div>\n<ul>\n<li>The student will calculate and construct the line of best fit between two variables.<\/li>\n<li>The student will evaluate the relationship between two variables to determine if that relationship is significant.<\/li>\n<\/ul>\n<\/div>\n<p id=\"fs-idp70571712\"><span data-type=\"title\">Collect the Data<\/span> Survey ten textbooks. Collect bivariate data (number of pages in a textbook, the cost of the textbook).<\/p>\n<ol id=\"fs-idp53322144\">\n<li>Complete the table.<br \/>\n<table id=\"fs-idm40594000\" summary=\"The blank table has number of pages in the first column and cost of textbook in the second column. 20 empty cells.\">\n<thead>\n<tr>\n<th>Number of pages<\/th>\n<th>Cost of textbook<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/li>\n<li>Which variable should be the dependent variable and which should be the independent variable? Why?<\/li>\n<li>Graph \u201cpages\u201d vs. \u201ccost.\u201d Plot the points on the graph in <a href=\"#fs-idm37313136\">Analyze the Data<\/a>. Label both axes with words. Scale both axes.<\/li>\n<\/ol>\n<p id=\"fs-idm37313136\"><span data-type=\"title\">Analyze the Data<\/span> Enter your data into your calculator or computer. Write the linear equation, rounding to four decimal places.<\/p>\n<ol id=\"fs-idm130060688\">\n<li>Calculate the following:\n<ol id=\"fs-idm69177152\" type=\"a\">\n<li><em data-effect=\"italics\">a<\/em> = ______<\/li>\n<li><em data-effect=\"italics\">b<\/em> = ______<\/li>\n<li>correlation = ______<\/li>\n<li><em data-effect=\"italics\">n<\/em> = ______<\/li>\n<li>equation: <em data-effect=\"italics\">y<\/em> = ______<\/li>\n<li>Is the correlation significant? Why or why not? (Answer in complete sentences.)<\/li>\n<\/ol>\n<\/li>\n<li>Supply an answer for the following senarios:\n<ol id=\"fs-idp3298784\" type=\"a\">\n<li>For a textbook with 400 pages, predict the cost.<\/li>\n<li>For a textbook with 600 pages, predict the cost.<\/li>\n<\/ol>\n<\/li>\n<li>Obtain the graph on your calculator or computer. Sketch the regression line.\n<div id=\"id19863024\" class=\"bc-figure figure\"><span id=\"id20268459\" data-type=\"media\" data-alt=\"Blank graph with vertical and horizontal axes.\"><img decoding=\"async\" src=\"https:\/\/pressbooks.ccconline.org\/acccomposition1\/wp-content\/uploads\/sites\/83\/2022\/05\/fig-ch12_15_01-1.png\" alt=\"Blank graph with vertical and horizontal axes.\" width=\"380\" data-media-type=\"image\/png\" \/><\/span><\/div>\n<\/li>\n<\/ol>\n<div id=\"fs-idp7458256\" data-type=\"list\">\n<div data-type=\"title\">Discussion Questions<\/div>\n<ol>\n<li>Answer each question in complete sentences.\n<ol id=\"fs-idm37663456\" type=\"a\">\n<li>Does the line seem to fit the data? Why?<\/li>\n<li>What does the correlation imply about the relationship between the number of pages and the cost?<\/li>\n<\/ol>\n<\/li>\n<li>Are there any outliers? If so, which point(s) is an outlier?<\/li>\n<li>Should the outlier, if it exists, be removed? Why or why not?<\/li>\n<\/ol>\n<\/div>\n<\/div>\n","protected":false},"author":32,"menu_order":86,"template":"","meta":{"pb_show_title":"","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-500","chapter","type-chapter","status-publish","hentry"],"part":452,"_links":{"self":[{"href":"https:\/\/pressbooks.ccconline.org\/accintrostats\/wp-json\/pressbooks\/v2\/chapters\/500","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressbooks.ccconline.org\/accintrostats\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/pressbooks.ccconline.org\/accintrostats\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/pressbooks.ccconline.org\/accintrostats\/wp-json\/wp\/v2\/users\/32"}],"version-history":[{"count":4,"href":"https:\/\/pressbooks.ccconline.org\/accintrostats\/wp-json\/pressbooks\/v2\/chapters\/500\/revisions"}],"predecessor-version":[{"id":657,"href":"https:\/\/pressbooks.ccconline.org\/accintrostats\/wp-json\/pressbooks\/v2\/chapters\/500\/revisions\/657"}],"part":[{"href":"https:\/\/pressbooks.ccconline.org\/accintrostats\/wp-json\/pressbooks\/v2\/parts\/452"}],"metadata":[{"href":"https:\/\/pressbooks.ccconline.org\/accintrostats\/wp-json\/pressbooks\/v2\/chapters\/500\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/pressbooks.ccconline.org\/accintrostats\/wp-json\/wp\/v2\/media?parent=500"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/pressbooks.ccconline.org\/accintrostats\/wp-json\/pressbooks\/v2\/chapter-type?post=500"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/pressbooks.ccconline.org\/accintrostats\/wp-json\/wp\/v2\/contributor?post=500"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/pressbooks.ccconline.org\/accintrostats\/wp-json\/wp\/v2\/license?post=500"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}