

{"id":56236,"date":"2018-04-13T02:46:57","date_gmt":"2018-04-13T09:46:57","guid":{"rendered":"https:\/\/www.questionpro.com\/blog\/?p=56236"},"modified":"2023-07-05T05:37:03","modified_gmt":"2023-07-05T05:37:03","slug":"cluster-sampling-vs-stratified-sampling","status":"publish","type":"post","link":"https:\/\/www.questionpro.com\/blog\/cluster-sampling-vs-stratified-sampling\/","title":{"rendered":"Cluster Sampling vs Stratified Sampling"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Cluster Sampling and Stratified Sampling are <\/span><a href=\"https:\/\/www.questionpro.com\/blog\/probability-sampling\/\"><span style=\"font-weight: 400;\">probability sampling<\/span><\/a><span style=\"font-weight: 400;\"> techniques with different approaches to create and analyze samples. \u00a0<\/span><\/p>\n<p style=\"text-align: center;\"><a class=\"square-cta secondary-lined-cta\" href=\"https:\/\/www.questionpro.com\/a\/showEntry.do?mode=audience&amp;sourceRef=blog-audience\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Select your respondents<\/strong><\/a><\/p>\n<p><a href=\"https:\/\/www.questionpro.com\/blog\/cluster-sampling\/\"><span style=\"font-weight: 400;\">Cluster Sampling<\/span><\/a><span style=\"font-weight: 400;\"> is a method where the target population is divided into multiple clusters. Some of these clusters are selected randomly for sampling or a second stage or multiple stage sampling is carried out to form the target sample. Depending on the number of steps followed to create the desired sample, cluster sampling is divided using a single-stage, two-stage or multiple stage <a href=\"https:\/\/www.questionpro.com\/blog\/types-of-sampling-for-social-research\/\">sampling techniques<\/a>. This sampling method is extremely cost-effective as it requires minimum efforts in sample creation and also convenient to execute.<\/span><\/p>\n<p style=\"text-align: center;\"><strong>LEARN ABOUT:<\/strong> <a href=\"https:\/\/www.questionpro.com\/blog\/survey-sampling\/\">Survey Sampling<\/a><\/p>\n<p><a href=\"https:\/\/www.questionpro.com\/blog\/stratified-random-sampling\/\"><span style=\"font-weight: 400;\">Stratified Sampling<\/span><\/a><span style=\"font-weight: 400;\"> is a probability sampling method, also called random quota sampling, where a large population is divided into unique, homogeneous strata and further, members from these strata are randomly selected to form a sample. Elements of each of the samples will be distinct which will give the entire population an equal opportunity to be a part of these samples. Segregation on the basis of age, religion, nationality, socioeconomic backgrounds, qualifications etc. can be done using this sampling technique.<\/span><\/p>\n<p style=\"text-align: center;\"><strong>LEARN MORE: <\/strong><a href=\"https:\/\/www.questionpro.com\/blog\/population-vs-sample\/\">Population vs Sample<\/a><\/p>\n<p><span style=\"font-weight: 400;\">In this blog, we will be discussing Cluster Sampling vs Stratified Sampling.<\/span><\/p>\n<table class=\"table-border\">\n<tbody>\n<tr>\n<td>\n<p style=\"text-align: center;\"><b>Factors for Comparison<\/b><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><b>Cluster Sampling <\/b><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><b>Stratified Sampling<\/b><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Definition<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Members of this sample are chosen from naturally divided groups called clusters, by randomly selecting elements to be a part of the sample. <\/span><\/td>\n<td><span style=\"font-weight: 400;\">Members of this sample are randomly chosen from non-overlapping, homogeneous strata.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Purpose<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Cost reduction and increased efficiency. <\/span><\/td>\n<td><span style=\"font-weight: 400;\">Enhanced precision and population depiction. <\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Sample selection<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Selection of the sample is done by randomly selected clusters and including all the members from these clusters. \u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Selection of the sample is done by randomly selecting members from various formed strata.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Selection of elements that form a Sample<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Conjointly<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Distinctively <\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Division type<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Naturally formed<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Depends on the researcher<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Heterogeneity <\/span><\/td>\n<td><span style=\"font-weight: 400;\">Internally, with the clusters <\/span><\/td>\n<td><span style=\"font-weight: 400;\">Externally, between various strata<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Homogeneity<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Externally, between various clusters<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Internally, with the strata<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><b>Cluster Sampling &#8211; Key Points:<\/b><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Naturally existing groups are chosen to be a part of the final sample set.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Mainly used in <\/span><a href=\"https:\/\/www.questionpro.com\/market-research.html\"><span style=\"font-weight: 400;\">market research<\/span><\/a><span style=\"font-weight: 400;\">, in this technique, a population is divided into clusters and these clusters are randomly chosen to be a part of the sample. <\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Information can also be collected from elements selected from each of the sub-clusters.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">This method is usually applied in groups where there is diversity within the groups and not between clusters. <\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">The only prerequisite is that all the clusters should be distinctive and non-overlapping. <\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p style=\"text-align: center;\"><a class=\"square-cta secondary-lined-cta\" href=\"https:\/\/www.questionpro.com\/a\/showEntry.do?mode=audience&amp;sourceRef=blog-audience\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Select your respondents<\/strong><\/a><\/p>\n<p><b>Stratified Sampling &#8211; Key Points:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">A population is divided into strata by random selection. <\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">The simplest explanation of strata is a group of members of a population. <\/span><\/li>\n<li style=\"font-weight: 400;\"><a href=\"https:\/\/www.questionpro.com\/blog\/simple-random-sampling\/\"><span style=\"font-weight: 400;\">Simple random sampling<\/span><\/a><span style=\"font-weight: 400;\"> is then performed on these strata to form samples.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">One similarity that stratified sampling has with cluster sampling is that the strat formed should also be distinctive and non-overlapping. <\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">By making sure each stratum is distinctive, the errors in results are drastically reduced.<\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Cluster Sampling and Stratified Sampling are probability sampling techniques with different approaches to create and analyze samples. \u00a0 Select your [&hellip;]<\/p>\n","protected":false},"author":65,"featured_media":101349,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[206,203],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Cluster Sampling vs Stratified Sampling | QuestionPro<\/title>\n<meta name=\"description\" content=\"Cluster Sampling and Stratified Sampling are probability sampling techniques with different approaches to create and analyze samples. 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