{"id":447,"date":"2017-09-08T02:38:26","date_gmt":"2017-09-08T02:38:26","guid":{"rendered":"http:\/\/pressbooks-dev.oer.hawaii.edu\/introductorystatistics\/chapter\/regression-textbook-cost\/"},"modified":"2017-09-08T02:38:26","modified_gmt":"2017-09-08T02:38:26","slug":"regression-textbook-cost","status":"publish","type":"chapter","link":"https:\/\/pressbooks-dev.oer.hawaii.edu\/introductorystatistics\/chapter\/regression-textbook-cost\/","title":{"raw":"Regression (Textbook Cost)","rendered":"Regression (Textbook Cost)"},"content":{"raw":"[latexpage]\n  <div data-type=\"note\" data-has-label=\"true\" id=\"fs-id1172137875645\" class=\"note statistics lab\" data-label=\"\"><div data-type=\"title\" class=\"title\">Regression (Textbook Cost) <\/div>\n\n    <p id=\"fs-idm90448\">Class Time:<\/p>\n    <p id=\"fs-idp162776560\">Names:<\/p>\n       <div data-type=\"list\" id=\"fs-idp101503968\"><div data-type=\"title\">Student Learning Outcomes<\/div><ul><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><\/div>\n\n\n<p id=\"fs-idp70571712\"><span data-type=\"title\">Collect the Data<\/span>\nSurvey ten textbooks. Collect bivariate data (number of pages in a textbook, the cost of the textbook).<\/p>\n<ol id=\"fs-idp53322144\"><li>Complete the table.\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.\"><thead><tr><th>Number of pages<\/th>\n\t\t\t\t\t\t\t<th>Cost of textbook<\/th>\n\t\t\t\t\t\t<\/tr><\/thead><tbody><tr><td>\n\t\t\t\t\t\t\t<\/td><td>\n\t\t\t\t\t\t<\/td><\/tr><tr><td>\n\t\t\t\t\t\t\t<\/td><td>\n\t\t\t\t\t\t<\/td><\/tr><tr><td>\n\t\t\t\t\t\t\t<\/td><td>\n\t\t\t\t\t\t<\/td><\/tr><tr><td>\n\t\t\t\t\t\t\t<\/td><td>\n\t\t\t\t\t\t<\/td><\/tr><tr><td>\n\t\t\t\t\t\t\t<\/td><td>\n\t\t\t\t\t\t<\/td><\/tr><tr><td>\n\t\t\t\t\t\t\t<\/td><td>\n\t\t\t\t\t\t<\/td><\/tr><tr><td>\n\t\t\t\t\t\t\t<\/td><td>\n\t\t\t\t\t\t<\/td><\/tr><tr><td>\n\t\t\t\t\t\t\t<\/td><td>\n\t\t\t\t\t\t<\/td><\/tr><\/tbody><\/table><\/li>\n\t<li>Which variable should be the dependent variable and which should be the independent\nvariable? Why?<\/li>\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>\n<\/ol><p id=\"fs-idm37313136\"><span data-type=\"title\">Analyze the Data<\/span>\nEnter your data into your calculator or computer.\nWrite the linear equation, rounding to four decimal places.<\/p>\n\n<ol id=\"fs-idm130060688\"><li>Calculate the following:\n<ol id=\"fs-idm69177152\" data-number-style=\"lower-alpha\"><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><\/li>\n\t<li>Supply an answer for the following senarios:\n<ol id=\"fs-idp3298784\" data-number-style=\"lower-alpha\"><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><\/li>\n\t<li>Obtain the graph on your calculator or computer. Sketch the regression line.\n<div class=\"bc-figure figure\" id=\"id19863024\"><span data-type=\"media\" id=\"id20268459\" data-alt=\"Blank graph with vertical and horizontal axes.\"><img src=\"http:\/\/pressbooks-dev.oer.hawaii.edu\/introductorystatistics\/wp-content\/uploads\/sites\/28\/2017\/09\/fig-ch12_15_01.png\" data-media-type=\"image\/png\" alt=\"Blank graph with vertical and horizontal axes.\" width=\"380\" \/><\/span>\n<\/div><\/li>\n<\/ol><div data-type=\"list\" id=\"fs-idp7458256\"><div data-type=\"title\">Discussion Questions<\/div><ol><li>Answer each question in complete sentences.\n<ol id=\"fs-idm37663456\" data-number-style=\"lower-alpha\"><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><\/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><\/ol><\/div>\n<\/div>","rendered":"<p>[latexpage]<\/p>\n<div data-type=\"note\" data-has-label=\"true\" id=\"fs-id1172137875645\" class=\"note statistics lab\" data-label=\"\">\n<div data-type=\"title\" class=\"title\">Regression (Textbook Cost) <\/div>\n<p id=\"fs-idm90448\">Class Time:<\/p>\n<p id=\"fs-idp162776560\">Names:<\/p>\n<div data-type=\"list\" id=\"fs-idp101503968\">\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><br \/>\nSurvey 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>\n\t\t\t\t\t\t\t<\/td>\n<td>\n\t\t\t\t\t\t<\/td>\n<\/tr>\n<tr>\n<td>\n\t\t\t\t\t\t\t<\/td>\n<td>\n\t\t\t\t\t\t<\/td>\n<\/tr>\n<tr>\n<td>\n\t\t\t\t\t\t\t<\/td>\n<td>\n\t\t\t\t\t\t<\/td>\n<\/tr>\n<tr>\n<td>\n\t\t\t\t\t\t\t<\/td>\n<td>\n\t\t\t\t\t\t<\/td>\n<\/tr>\n<tr>\n<td>\n\t\t\t\t\t\t\t<\/td>\n<td>\n\t\t\t\t\t\t<\/td>\n<\/tr>\n<tr>\n<td>\n\t\t\t\t\t\t\t<\/td>\n<td>\n\t\t\t\t\t\t<\/td>\n<\/tr>\n<tr>\n<td>\n\t\t\t\t\t\t\t<\/td>\n<td>\n\t\t\t\t\t\t<\/td>\n<\/tr>\n<tr>\n<td>\n\t\t\t\t\t\t\t<\/td>\n<td>\n\t\t\t\t\t\t<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/li>\n<li>Which variable should be the dependent variable and which should be the independent<br \/>\nvariable? 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><br \/>\nEnter your data into your calculator or computer.<br \/>\nWrite the linear equation, rounding to four decimal places.<\/p>\n<ol id=\"fs-idm130060688\">\n<li>Calculate the following:\n<ol id=\"fs-idm69177152\" data-number-style=\"lower-alpha\">\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\" data-number-style=\"lower-alpha\">\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 class=\"bc-figure figure\" id=\"id19863024\"><span data-type=\"media\" id=\"id20268459\" data-alt=\"Blank graph with vertical and horizontal axes.\"><img decoding=\"async\" src=\"\/\/pressbooks-dev.oer.hawaii.edu\/introductorystatistics\/wp-content\/uploads\/sites\/28\/2017\/09\/fig-ch12_15_01.png\" data-media-type=\"image\/png\" alt=\"Blank graph with vertical and horizontal axes.\" width=\"380\" \/><\/span>\n<\/div>\n<\/li>\n<\/ol>\n<div data-type=\"list\" id=\"fs-idp7458256\">\n<div data-type=\"title\">Discussion Questions<\/div>\n<ol>\n<li>Answer each question in complete sentences.\n<ol id=\"fs-idm37663456\" data-number-style=\"lower-alpha\">\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":3,"menu_order":9,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":["openstaxcollege"],"pb_section_license":"cc-by"},"chapter-type":[],"contributor":[57],"license":[50],"class_list":["post-447","chapter","type-chapter","status-publish","hentry","contributor-openstaxcollege","license-cc-by"],"part":405,"_links":{"self":[{"href":"https:\/\/pressbooks-dev.oer.hawaii.edu\/introductorystatistics\/wp-json\/pressbooks\/v2\/chapters\/447","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressbooks-dev.oer.hawaii.edu\/introductorystatistics\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/pressbooks-dev.oer.hawaii.edu\/introductorystatistics\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/pressbooks-dev.oer.hawaii.edu\/introductorystatistics\/wp-json\/wp\/v2\/users\/3"}],"version-history":[{"count":0,"href":"https:\/\/pressbooks-dev.oer.hawaii.edu\/introductorystatistics\/wp-json\/pressbooks\/v2\/chapters\/447\/revisions"}],"part":[{"href":"https:\/\/pressbooks-dev.oer.hawaii.edu\/introductorystatistics\/wp-json\/pressbooks\/v2\/parts\/405"}],"metadata":[{"href":"https:\/\/pressbooks-dev.oer.hawaii.edu\/introductorystatistics\/wp-json\/pressbooks\/v2\/chapters\/447\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/pressbooks-dev.oer.hawaii.edu\/introductorystatistics\/wp-json\/wp\/v2\/media?parent=447"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/pressbooks-dev.oer.hawaii.edu\/introductorystatistics\/wp-json\/pressbooks\/v2\/chapter-type?post=447"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/pressbooks-dev.oer.hawaii.edu\/introductorystatistics\/wp-json\/wp\/v2\/contributor?post=447"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/pressbooks-dev.oer.hawaii.edu\/introductorystatistics\/wp-json\/wp\/v2\/license?post=447"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}