{"id":32479,"date":"2015-09-04T13:47:08","date_gmt":"2015-09-04T13:47:08","guid":{"rendered":"https:\/\/vwo.com\/blog\/?p=32479"},"modified":"2025-04-25T16:56:49","modified_gmt":"2025-04-25T11:26:49","slug":"why-you-fail-ab-tests","status":"publish","type":"post","link":"https:\/\/vwo.com\/blog\/why-you-fail-ab-tests\/","title":{"rendered":"5 Reasons Your A\/B Test Fails (And How Not To)"},"content":{"rendered":"\n<p>There are umpteen case studies out there that will be no less than a miracle\u2026<\/p>\n\n\n\n<p><span style=\"font-weight: 400\">\u2018<em>How we took an <a href=\"https:\/\/vwo.com\/ab-testing\/\">A\/B test<\/a> and saw a 200 percent jump in conversions<\/em>\u2019.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400\">Like all things shiny and bright this one has a dark side. While the sudden boom in conversions and stories that sell you great promises are not unreal or impossible, they are not always feasible. According to a&nbsp;VWO study, <a href=\"https:\/\/vwo.com\/blog\/cro-industry-insights\/\" target=\"_blank\" rel=\"noopener noreferrer\">1 in 7 A\/B tests<\/a> are the ones that win you great conversions.<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center\"><a href=\"https:\/\/vwo.com\/ab-testing\/#guide-download\"><span style=\"text-decoration: underline\"><em>Download Free: A\/B Testing Guide<\/em><\/span><\/a><\/h2>\n\n\n\n<p><span style=\"font-weight: 400\">While you wonder what the other six are doing let\u2019s not be too harsh on the tests! It\u2019s not the test that fails. In any situation, the A\/B tests are going to give the better variation, the one that will bring you relatively better results. A\/B tests are not the solution, they are simply the more conclusive steps to arrive at the solution. Like all tests, they need preparation and the results need analysis.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400\">The \u2018make it\u2019 or \u2018break it\u2019 lies therein.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400\">Below are 5 common reasons why your A\/B tests fail.&nbsp;Read on to learn how to prepare to run a winning A\/B test:<\/span><\/p>\n\n\n<h2 class=\"js-cro-guide-subheading gtm_heading \" data-level=\"level1\" data-menu=\"#1 You Don't Know Thy Users\" id=\"1-you-dont-know-thy-users\" data-menu-id=\"1-you-dont-know-thy-users\" style=\"text-align:left\">#1 You Don&#8217;t Know Thy Users<\/h2>\n\n\n<p><span style=\"font-weight: 400\">A simple truth, be it an online business or an offline business if you do not understand your customer base you are at a loss. How is this data relevant to <a href=\"https:\/\/vwo.com\/ab-testing\/\">A\/B testing<\/a>? Insights come after an overview. This is to have a rough idea of the traffic landing on your page. &nbsp;<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400\">A wee bit of consumer profiling and consumer behavior research would give you the conditionals that help in determining the appeal of the page.&nbsp;Extract factors like the targeted age groups, the targeted geography, and <\/span>the targeted business, then move to the <span style=\"font-weight: 400\">qualitative factors like user intent.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400\">A more expansive method would be to take a consumer survey. Ask pertinent questions as to how the user experience has been, whether <\/span>would they be coming back, would they suggest your online services\/product further.<\/p>\n\n\n\n<p><span style=\"font-weight: 400\">Apart from helping you tackle the non-design problems to better your service or product, surveys can throw light on faulty or sub-par user experience on your site, helping you construct a solid hypothesis for the test. Conduct&nbsp;the test after you are confident that you have done your best to resolve them.<\/span><\/p>\n\n\n<h2 class=\"js-cro-guide-subheading gtm_heading \" data-level=\"level1\" data-menu=\"#2 Your UX is A Puzzle\u00a0(the user isn't putting it together for you)\" id=\"2-your-ux-is-a-puzzle-the-user-isnt-putting-it-together-for-you\" data-menu-id=\"2-your-ux-is-a-puzzle-the-user-isnt-putting-it-together-for-you\" style=\"text-align:left\">#2 Your UX is A Puzzle<strong>\u00a0<\/strong>(the user isn&#8217;t putting it together for you)<\/h2>\n\n\n<p><span style=\"font-weight: 400\">Now that you have a fair idea of your market, put the puzzle pieces together. Mapping the user intent shouldn\u2019t go to waste. &nbsp;Use the extracted gems so that the UX for the variations is more specific and hence deterministic. Shooting arrows in the dark to make a variation is a waste of resources and time. Testing it further is far from judicious. Even after the basics are caught it <em>might<\/em> take several design attempts to reach a variation that can act as a beta to your control.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400\">Try gauging the psychology of the user instead of making random choices. <\/span><i><span style=\"font-weight: 400\">A button here<\/span><\/i>, a button there, a button everywhere won\u2019t help, a concrete plan and a UX that accommodates it is what you need. It will all come down to User Experience which is based on factors like Usability, Findability, and <span style=\"font-weight: 400\">Accessibility. All of which can be tested with usability tools. Please leave the multiple versions with different color schemes out of the picture.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400\">The elements you add to the variation would also be the deciding factor to the test you want to conduct i.e. an <a href=\"https:\/\/vwo.com\/testing\/\">A\/B or Multivariate testing or Split testing<\/a> depending on the combination of the elements that you add to the variation\/s.<\/span><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><i> A button here, a button there, a button everywhere won\u2019t necessarily convert.<\/i><\/p>\n<\/blockquote>\n\n\n<h2 class=\"js-cro-guide-subheading gtm_heading \" data-level=\"level1\" data-menu=\"#3\u00a0You Are Not Testing The Right Elements\" id=\"3-you-are-not-testing-the-right-elements\" data-menu-id=\"3-you-are-not-testing-the-right-elements\" style=\"text-align:left\">#3\u00a0You Are Not Testing The Right Elements<\/h2>\n\n\n<p><span style=\"font-weight: 400\">As said before STOP playing with the colors alone.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400\">Here\u2019s a couple&nbsp;of questions you ask:<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400\"> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href=\"https:\/\/vwo.com\/blog\/landing-page-testing\/\">What are you testing, is it a landing page<\/a>, a checkout page, or a product page, perhaps?<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400\"> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/span><span style=\"font-weight: 400\">What is the purpose of this page \u2014&nbsp;micro-conversions or macro-conversions?<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400\"> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Which parts of the page are garnering the most attention?<\/span><\/li>\n<\/ul>\n\n\n\n<p>Not sure how to analyze your landing page? Use the <a href=\"https:\/\/landingpageanalyzer.io\/\" target=\"_blank\" rel=\"noopener noreferrer\">Landing Page Analyzer<\/a> &#8211; a free tool from VWO.<\/p>\n\n\n\n<p><span style=\"font-weight: 400\">Chances are you covered a lot of information when you planned the&nbsp;UX. Use that to your advantage. There is Data Analytics to figure out which pages are getting&nbsp;attention and which pages are not. Digging in further <a href=\"https:\/\/vwo.com\/insights\/heatmaps\/\">Heat Maps<\/a> will&nbsp;give you a fair idea of the users\u2019 attention to specific sections on your page.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400\">Different pages have different purposes, a landing page should link the user&nbsp;to the <\/span>product page, a product page should take the user&nbsp;to a checkout page and a checkout page should get you final&nbsp;conversions. Different elements are to be placed in<span style=\"font-weight: 400\"> strategic positions to keep the user engaged in this flow. Be specific in choosing what to test and where.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400\">A little perspective on this before the test would make it foolproof.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400\">That way when you see overwhelming traffic on a conversion page you will not jump to the wrong conclusion and make the right decisions.<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center\"><a href=\"https:\/\/vwo.com\/ab-testing\/#guide-download\"><span style=\"text-decoration: underline\"><em>Download Free: A\/B Testing Guide<\/em><\/span><\/a><\/h2>\n\n\n<h2 class=\"js-cro-guide-subheading gtm_heading \" data-level=\"level1\" data-menu=\"#4 Not Setting Yourself A Target\" id=\"4-not-setting-yourself-a-target\" data-menu-id=\"4-not-setting-yourself-a-target\" style=\"text-align:left\">#4 Not Setting Yourself A Target<\/h2>\n\n\n<p><span style=\"font-weight: 400\">Goodhardt\u2019s law&nbsp;applies:<\/span><span style=\"font-weight: 400\">&nbsp;<\/span><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>When a measure becomes a target, it ceases to be a good measure.<a href=\"https:\/\/twitter.com\/intent\/tweet?text=When%20a%20measure%20becomes%20a%20target,%20it%20ceases%20to%20be%20a%20good%20measure.%20-%20VWO%20Blog%20https:\/\/vwo.com\/blog\/why-you-fail-ab-tests\/%20via%20@VWO\" target=\"blank\" rel=\"noopener noreferrer\"><img alt=\"\"><\/a><\/p>\n<\/blockquote>\n\n\n\n<p><span style=\"font-weight: 400\">If you are looking to achieve a certain amount of traffic on your landing page, set that figure as your target. It has to be realistic and it shouldn\u2019t be compromised on much.&nbsp;<\/span><span style=\"font-weight: 400\">Test your variations and compare results against the set target. Why should you do this?<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400\">Let\u2019s say as a result of<\/span> your A\/B test you got a winning variation. A win but a marginal win. Chances are you will be biased to that variation slightly. Remember that this is only relative. This can go up a few notches before you settle. If you have a target you are less likely to settle for the one that measures only slightly better. As it happens with checkout pages adding a conversion button to the top and bottom makes more conversions than having it on either of the two. What if you didn&#8217;t test such combinations because comparing one against the other gave a slightly better result?<br> <br> Don\u2019t invest all your expectations in the one variation that came out better. Be adventurous, change it a little more, play around and improvise (based on informed guesses), add some seasoning, and <span style=\"font-weight: 400\">test the new one.&nbsp;<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400\"> Don\u2019t compromise a lot on the target but there is a catch here; once the test has run for long enough to give you statistically significant results and you see no more to be squeezed out of it, that&#8217;s when you stop and move on to bigger things. Accept what cannot be changed.<\/span><\/p>\n\n\n\n<p><strong><span style=\"color: #993300\">Related Resource<\/span><\/strong>: <a href=\"https:\/\/vwo.com\/tools\/ab-test-duration-calculator\/\" target=\"_blank\" rel=\"noopener noreferrer\">A\/B Split Testing Duration Calculator<\/a><\/p>\n\n\n<h2 class=\"js-cro-guide-subheading gtm_heading \" data-level=\"level1\" data-menu=\"#5 Giving Up Too Soon\" id=\"5-giving-up-too-soon\" data-menu-id=\"5-giving-up-too-soon\" style=\"text-align:left\">#5 Giving Up Too Soon<\/h2>\n\n\n<p><span style=\"font-weight: 400\">What if a test fails to obtain the <\/span>desired results? \u00a0The key is to test a variation exhaustively. Don\u2019t let results be sabotaged by environmental factors, different times of the day, different days of the week. Your failed tests are what you build successful tests on. Test more (improved) variations if one doesn\u2019t give any statistically<span style=\"font-weight: 400\"> significant results. In manual testing, significance will need to be calculated. Here\u2019s the <a href=\"https:\/\/vwo.com\/tools\/ab-test-significance-calculator\/\">VWO significance calculator<\/a> for the quick math.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400\">There are lessons to learn from every failure.<\/span><\/p>\n\n\n\n<p class=\"has-text-align-center\"><b><i>\u2018Why do we fall Bruce?\u2019<\/i><\/b><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"892\" height=\"376\" src=\"https:\/\/static.wingify.com\/gcp\/uploads\/sites\/3\/2015\/09\/ab-test-failure-analogy.png\" alt=\"batman movie scene why do we fall bruce\" class=\"wp-image-52050\" srcset=\"https:\/\/static.wingify.com\/gcp\/uploads\/sites\/3\/2015\/09\/ab-test-failure-analogy.png 892w, https:\/\/static.wingify.com\/gcp\/uploads\/sites\/3\/2015\/09\/ab-test-failure-analogy.png?tr=w-768 768w, https:\/\/static.wingify.com\/gcp\/uploads\/sites\/3\/2015\/09\/ab-test-failure-analogy.png?tr=w-640 640w, https:\/\/static.wingify.com\/gcp\/uploads\/sites\/3\/2015\/09\/ab-test-failure-analogy.png?tr=w-375 375w\" sizes=\"(max-width: 892px) 100vw, 892px\" \/><\/figure>\n\n\n\n<p><span style=\"font-weight: 400\"><strong>Takeaway:<\/strong> A\/B testing is not just about running a test or applying an optimizing <a href=\"https:\/\/vwo.com\/blog\/ab-testing-tools\/\">tool<\/a>. It\u2019s about the research and hard work you put into one in the preparatory stages. A test never fails. You fail a test. Set yourself realistic goals and track your progress. Miracles happen, some just take more time\u2026.like a baby.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400\">The second step to avoiding failing while A\/B testing is to ensure that you interpret your results correctly. Keep looking at this space on result analysis and how to extract conversions from them.<\/span><\/p>\n\n\n\n<p>Even if you fail, you can leverage the failed test for your gain. Watch a webinar to learn how:<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Leveraging Bad Test Results\" width=\"690\" height=\"388\" src=\"https:\/\/www.youtube.com\/embed\/E8UpCb8UeBg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><figcaption class=\"wp-element-caption\">Leveraging bad test results<\/figcaption><\/figure>\n\n\n\n<p><span id=\"hs-cta-wrapper-2194fb12-9d3f-4621-98c5-fd10ebcbc1e0\" class=\"hs-cta-wrapper\"><span id=\"hs-cta-2194fb12-9d3f-4621-98c5-fd10ebcbc1e0\" class=\"hs-cta-node hs-cta-2194fb12-9d3f-4621-98c5-fd10ebcbc1e0\"><\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>There are umpteen case studies out there that will be no less than a miracle\u2026 \u2018How we took an A\/B test and saw a 200 percent jump in conversions\u2019. Like all things shiny and bright this one has a dark side. While the sudden boom in conversions and stories that sell you great promises are&#8230;<\/p>\n","protected":false},"author":83,"featured_media":56659,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"post_read_time":7,"footnotes":""},"categories":[10676],"tags":[],"feature":[1852,10526],"industry-type":[],"product":[10626],"role":[10638],"region":[],"class_list":["post-32479","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-a-b-testing","feature-ab-testing","feature-experimentation-platform"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>5 Reasons Your A\/B test fails (and how not to)<\/title>\n<meta name=\"description\" content=\"Only one in every 7 A\/B Tests succeed. That&#039;s not a universal truth though, nor is it a &#039;failure&#039;. We explain the common mistakes and how not to make them.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/vwo.com\/blog\/why-you-fail-ab-tests\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"5 Reasons Your A\/B test fails (and how not to)\" \/>\n<meta property=\"og:description\" content=\"Only one in every 7 A\/B Tests succeed. That&#039;s not a universal truth though, nor is it a &#039;failure&#039;. We explain the common mistakes and how not to make them.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/vwo.com\/blog\/why-you-fail-ab-tests\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/vwoofficial\/\" \/>\n<meta property=\"article:published_time\" content=\"2015-09-04T13:47:08+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-04-25T11:26:49+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.wingify.com\/gcp\/uploads\/sites\/3\/2015\/09\/OG-image_5-Reasons-Your-AB-Test-Fails-And-How-Not-To.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Aditi Gupta\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@VWO\" \/>\n<meta name=\"twitter:site\" content=\"@VWO\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Aditi Gupta\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/vwo.com\/blog\/why-you-fail-ab-tests\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/vwo.com\/blog\/why-you-fail-ab-tests\/\"},\"author\":{\"name\":\"Aditi Gupta\",\"@id\":\"https:\/\/vwo.com\/blog\/#\/schema\/person\/fd13113a8a942a827a210a68aed12c5b\"},\"headline\":\"5 Reasons Your A\/B Test Fails (And How Not To)\",\"datePublished\":\"2015-09-04T13:47:08+00:00\",\"dateModified\":\"2025-04-25T11:26:49+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/vwo.com\/blog\/why-you-fail-ab-tests\/\"},\"wordCount\":1423,\"publisher\":{\"@id\":\"https:\/\/vwo.com\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/vwo.com\/blog\/why-you-fail-ab-tests\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.wingify.com\/gcp\/uploads\/sites\/3\/2015\/09\/Feature-image_5-Reasons-Your-AB-Test-Fails-And-How-Not-To.png\",\"articleSection\":[\"A\/B Testing\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/vwo.com\/blog\/why-you-fail-ab-tests\/\",\"url\":\"https:\/\/vwo.com\/blog\/why-you-fail-ab-tests\/\",\"name\":\"5 Reasons Your A\/B test fails (and how not to)\",\"isPartOf\":{\"@id\":\"https:\/\/vwo.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/vwo.com\/blog\/why-you-fail-ab-tests\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/vwo.com\/blog\/why-you-fail-ab-tests\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.wingify.com\/gcp\/uploads\/sites\/3\/2015\/09\/Feature-image_5-Reasons-Your-AB-Test-Fails-And-How-Not-To.png\",\"datePublished\":\"2015-09-04T13:47:08+00:00\",\"dateModified\":\"2025-04-25T11:26:49+00:00\",\"description\":\"Only one in every 7 A\/B Tests succeed. 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