{"id":1197,"date":"2022-02-11T14:25:51","date_gmt":"2022-02-11T13:25:51","guid":{"rendered":"https:\/\/microdata.spirehost.no\/?post_type=eksempel&#038;p=1197"},"modified":"2023-10-27T16:39:19","modified_gmt":"2023-10-27T15:39:19","slug":"perform-a-random-sub-selection-from-a-total-population","status":"publish","type":"eksempel","link":"https:\/\/www.microdata.no\/en\/eksempel\/perform-a-random-sub-selection-from-a-total-population\/","title":{"rendered":"Perform a random sub-selection from a total population"},"content":{"rendered":"\n<p>The example below demonstrates how to extract random samples from a total population\/larger population. This is done using the <code>sample<\/code>&nbsp;command.<\/p>\n\n\n\n<p>The first input parameter specifies the size of the extract. If this is a decimal number (0.0-1.0), a share is deducted. If you want a random selection of a specific number of individuals, enter an integer &gt; 1000.<\/p>\n\n\n\n<p>The last input parameter is a self-defined positive integer that you are free to choose yourself, i.e. a seed number. This ensures that the individuals in the sample you draw will be identical in subsequent runs. If you want to draw several selections consisting of new people for each draw, a new seed number is selected for each time the command is run.<\/p>\n\n\n<div id=\"rose-block_8ec4291719247ef4c211f78d25459fb1\" class=\"rose-code codeblock-wrapper\">\n<pre tabindex=\"0\" class=\"codeblock\"><code>\/\/Connect to datastore\r\nrequire no.ssb.fdb:23 as db\r\n\r\n\/\/Create dataset with all residents in Norway as of 1\/1 2021 and then extract a 10% sample from these\r\ncreate-dataset totalpop\r\nimport db\/BEFOLKNING_STATUSKODE 2021-01-01 as registerstatus21\r\nkeep if registerstatus21 == '1'\r\nsample 0.1 999\r\n\r\n\/\/Create dataset with all residents in Norway as of 1\/1 2021 and then draw a sample consisting of 5,000 individuals\r\ncreate-dataset totalpop2\r\nimport db\/BEFOLKNING_STATUSKODE 2021-01-01 as registerstatus21\r\nkeep if registerstatus21 == '1'\r\nsample 5000 888\r\n\r\n\/\/Create a dataset with all residents in Norway as of 1\/1 2021 and then draw a sample consisting of 5,000 new individuals (different from the previous selection)\r\ncreate-dataset totalpop3\r\nimport db\/BEFOLKNING_STATUSKODE 2021-01-01 as registerstatus21\r\nkeep if registerstatus21 == '1'\r\nsample 5000 950<\/code><\/pre>\n<\/div>","protected":false},"parent":0,"menu_order":10,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":""},"class_list":["post-1197","eksempel","type-eksempel","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Perform a random sub-selection from a total population - microdata.no<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.microdata.no\/eksempel\/trekke-tilfeldige-utvalg-fra-en-totalpopulasjon\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Perform a random sub-selection from a total population - microdata.no\" \/>\n<meta property=\"og:description\" content=\"The example below demonstrates how to extract random samples from a total population\/larger population. 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