{"version":"1.0","provider_name":"Tutorial","provider_url":"https:\/\/www.vskills.in\/certification\/tutorial","author_name":"Team Vskills","author_url":"https:\/\/www.vskills.in\/certification\/tutorial\/author\/vskills_admin\/","title":"Bases of stratification - Tutorial","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"tKUicYDqE6\"><a href=\"https:\/\/www.vskills.in\/certification\/tutorial\/bases-of-stratification\/\">Bases of stratification<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.vskills.in\/certification\/tutorial\/bases-of-stratification\/embed\/#?secret=tKUicYDqE6\" width=\"600\" height=\"338\" title=\"&#8220;Bases of stratification&#8221; &#8212; Tutorial\" data-secret=\"tKUicYDqE6\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.vskills.in\/certification\/tutorial\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","description":"The bases of stratification depend on the variable being studied. Since the survey may be interested in May variables, and one, it may be necessary to have stratification on the basis of more than one variable. In view of this, strata should be formed on the basis of major variables. In marketing research, stratification is...","thumbnail_url":"https:\/\/www.vskills.in\/lms\/wp-content\/uploads\/2020\/01\/Image-18-2.png"}