{"id":1058,"date":"2013-09-26T16:56:50","date_gmt":"2013-09-26T16:56:50","guid":{"rendered":"http:\/\/sites.uac.pt\/amendes\/?p=1058"},"modified":"2013-09-26T16:56:50","modified_gmt":"2013-09-26T16:56:50","slug":"to-the-woods","status":"publish","type":"post","link":"https:\/\/sites.uac.pt\/amendes\/estatistica\/to-the-woods\/","title":{"rendered":"To the Woods &#8211; a detailed comparison of Sampling methods"},"content":{"rendered":"<div id=\"attachment_1059\" style=\"width: 266px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.reading.ac.uk\/ssc\/n\/software\/tothewoods.htm\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1059\" class=\"size-full wp-image-1059\" src=\"http:\/\/sites.uac.pt\/amendes\/files\/2013\/09\/tothewoods.jpg\" alt=\"Simula\u00e7\u00e3o para aprender amostragem simples e estratificada\" width=\"256\" height=\"188\" \/><\/a><p id=\"caption-attachment-1059\" class=\"wp-caption-text\">Simula\u00e7\u00e3o para aprender amostragem simples e estratificada<\/p><\/div>\n<h1>To the Woods &#8211; a detailed comparison of Simple Random Sampling and Stratified          Sampling<\/h1>\n<p>In this game the aim is to conduct a small survey to estimate the total          number of trees in a forest and the proportion of large trees. A tree          is considered &#8216;large&#8217; if its diameter at breast height (DBH) is greater          than 30cm. The area of forest from which the sample is to be taken is          divided into two regions (&#8216;East&#8217; and &#8216;West&#8217;) by a river. Within each region          it is possible to count the number of trees in any 50m x 50m plot. There          are 168 plots in total &#8211; 96 to the West of the river and 72 to the East.<\/p>\n<p>There are two alternative sampling solutions. Students take a sample          of 14 plots and can either use simple random sampling or stratified sampling          to choose them. They record the number of small trees, the number of large          trees and the total number of trees for each of the 14 observations.<\/p>\n<p>The game consists of 168 small pieces of card, which represent the plots,          slipped into slits in a large piece of card representing the forest. A          river can be drawn on the large piece of card to divide the forest into          two regions. One side is labelled &#8216;West&#8217; and the other &#8216;East&#8217;. The protruding          sections of the plots are labelled with their region side (West or East)          and plot number (1 to 96 and 1 to 72, respectively). The student pulls          out the chosen plots and records the numbers of large and small trees,          which is printed on the lower section of the plot.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>To the Woods &#8211; a detailed comparison of Simple Random Sampling and Stratified Sampling In this game the aim is to conduct a small survey to estimate the total number of trees in a forest and the proportion of large trees. A tree is considered &#8216;large&#8217; if its diameter at breast height (DBH) is greater [&hellip;]<\/p>\n","protected":false},"author":159,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[102,105,137],"tags":[147,157],"class_list":["post-1058","post","type-post","status-publish","format-standard","hentry","category-estatistica","category-materiais-ensino","category-software","tag-estat-descritiva","tag-software-estatistica"],"_links":{"self":[{"href":"https:\/\/sites.uac.pt\/amendes\/wp-json\/wp\/v2\/posts\/1058","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.uac.pt\/amendes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.uac.pt\/amendes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.uac.pt\/amendes\/wp-json\/wp\/v2\/users\/159"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.uac.pt\/amendes\/wp-json\/wp\/v2\/comments?post=1058"}],"version-history":[{"count":2,"href":"https:\/\/sites.uac.pt\/amendes\/wp-json\/wp\/v2\/posts\/1058\/revisions"}],"predecessor-version":[{"id":1061,"href":"https:\/\/sites.uac.pt\/amendes\/wp-json\/wp\/v2\/posts\/1058\/revisions\/1061"}],"wp:attachment":[{"href":"https:\/\/sites.uac.pt\/amendes\/wp-json\/wp\/v2\/media?parent=1058"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.uac.pt\/amendes\/wp-json\/wp\/v2\/categories?post=1058"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.uac.pt\/amendes\/wp-json\/wp\/v2\/tags?post=1058"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}