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It presents detailed statistical data including the distribution of raw scores against corresponding percentile ranks, calculated from a cohort of 1,944 students across 36 institutions. The report outlines key performance metrics such as a mean score of 33.9, a standard deviation of 11.1, a median of 33, a KR-21 reliability coefficient of 0.87, and a standard error of measurement of 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was the total number of students included in the OR18 composite norms?","Question",{"text":112,"@type":113},"The composite norms were calculated based on the scores of 1,944 students from 36 institutions.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What is the mean raw score for the OR18 exam?",{"text":117,"@type":113},"The mean raw score for the 2018 Organic Chemistry Full Year Exam is 33.9.",{"name":119,"@type":110,"acceptedAnswer":120},"What is the KR-21 reliability coefficient for this exam?",{"text":121,"@type":113},"The KR-21 reliability coefficient for the OR18 exam is 0.87.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},331654,1790100088,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":29,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":8,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":81,"preview_page_count":4},13056703020460,"https://ap-avatar.wpscdn.com/avatar/be000253dac470eee5d?_k=1778207105932848923","American Chemical Society Division of Chemical Education Composite Norms – Organic Chemistry 2018 (OR18)  \nScore  \n70  \n50  \n49  \n48  \n47  \n46  \nPercentile Score Percentile Score  \n100 44 81 18  \n91  \n89  \n88  \n24 21  \n23 17 22 15  \nMean  \nStd. deviation Median  \n86  \n84  \n21  \n20  \n12  \n10  \nKR-21 reliability Std error/meas  \nPercentile  \n6  \n33.9  \n11.1  \n33  \n0.87  \n3.99  \n\n|  |\n| --- |\n| 69 100 |\n| 68 100 |\n| 67 100 |\n| 66 100 |\n| 65 100 |\n| 64 100 |\n| 63 100 |\n| 62 99 |\n| 61 99 |\n| 60 99 |\n| 59 98 |\n| 58 98 |\n| 57 97 |\n| 56 96 |\n| 55 96 |\n| 54 95 |\n| 53 94 |\n| 52 93 |\n| 51 92 |\n|  |\n|  |\n|  |\n|  |\n|  |\n| 45 83 |\n\n\n|  |\n| --- |\n| 43 78 |\n| 42 76 |\n| 41 74 |\n| 40 72 |\n| 39 69 |\n| 38 66 |\n| 37 63 |\n| 36 60 |\n| 35 57 |\n| 34 53 |\n| 33 51 |\n| 32 48 |\n| 31 44 |\n| 30 41 |\n| 29 38 |\n| 28 34 |\n| 27 30 |\n| 26 27 |\n| 25 24 |\n|  |\n|  |\n|  |\n|  |\n|  |\n| 19 7 |\n\n17 4  \n16 3  \n15 2  \n14 1  \n13 1  \n12 0  \n11 0  \n10 0  \n9 0  \n8 0  \n7 0  \n6 0  \n5 0  \n4 0  \n3 0  \n2 0  \n1 0  \n0 0  \nOR18 Norms  \nbased on the scores of 1944 students from 36 institutions  \nOrganic Chemistry 2018-Full Year Exam (Gray version)","cbCaiiXUcfx0aEWQ","https://ap.wps.com/l/cbCaiiXUcfx0aEWQ","pdf",182524,"English","# Examination Statistics\n## Score and Percentile Distribution","[{\"question\":\"What was the total number of students included in the OR18 composite norms?\",\"answer\":\"The composite norms were calculated based on the scores of 1,944 students from 36 institutions.\"},{\"question\":\"What is the mean raw score for the OR18 exam?\",\"answer\":\"The mean raw score for the 2018 Organic Chemistry Full Year Exam is 33.9.\"},{\"question\":\"What is the KR-21 reliability coefficient for this exam?\",\"answer\":\"The KR-21 reliability coefficient for the OR18 exam is 0.87.\"}]","American Chemical Society Division of Chemical Education Composite Norms - Organic Chemistry 2018 - Exam Norm Sheet | PDF",1789994459]