Statistical Significance

Statistical significance is the probability that an effect is not due to just chance alone. It is an integral part of statistical hypothesis testing where it is used as an important value judgment. In statistics, a result is considered significant not because it is important or meaningful, but because it has been predicted as unlikely to have occurred by chance alone.The present-day concept of statistical significance originated from Ronald Fisher when he developed statistical hypothesis testing in the early 20th century.
Posts about Statistical Significance
  • 6 Must-Know Tips for Successful A/B Testing

    … Conversion rate optimization (CRO) lets you achieve something quite wonderful: it helps you get more out of your existing traffic. A/B testing is the secret sauce that makes that happen. But what happens when you finally decide to carry out A/B tests? You find tons of articles on the subject and are bombarded with advice—advice which is often…

    George Mathew/ The Daily Egg- 22 readers -
  • Seven Conversion Rate Tactics That Increased Sales by $21 Million

    … nine to two. Using VWO, we let the test run for more than 45 days. The winning variation was the clean checkout variation, which resulted in an 11.4% increase in conversion rates, at a 99% statistical significance level. The change meant an additional $100,000 per year in sales. 3. Clear Call to Action Make your CTA big, bold, and bright…

    MarketingProfs- 14 readers -
  • The Great Disavow Debate

    … to Recover From a Penguin Penalty? To explore this matter, we looked at a few client recoveries to correlate traffic recovery with link attrition. We correlate search engine traffic from SEMrush and link loss/acquisition from Ahrefs. You can see the graphs below: Site 1: Site 2: Site 3: Site 4: Site 5: By looking at the first chart for each site…

    Marcela De Vivo/ Search Engine Watchin SEO Google- 7 readers -
  • How to Stop Wasting AdWords Spend In Just 3 Clicks

    … to employ, automate boring AdWords tasks, and let you remain a control freak. However, over the course of writing and using over 25 scripts in our accounts we’ve discovered some limitations with scripts that may hinder you from hitting your goals, particularly in your larger AdWords accounts. Scanning for Broken URLs in AdWords creates…

    Jeremy Page/ PPC Heroin Paid Search How To's- 9 readers -
  • 2014′s Top 10 Analytics & Marketing Columns On Marketing Land

    … Google’s Analytics program, and specifically the migration to Universal Analytics, dominated the popular columns in our Analytics & Marketing column in 2014. But our readers also showed a lot of interest in the critically important topics of statistical significance, tag management and social analytics. Following, the top 10 columns…

    Pamela Parker/ Marketing Land- 18 readers -
  • Customer Choice and Conversion: Less Is More

    … calls to action, including calls to sign up for the newsletter and like them on Facebook. They hypothesized that these extra CTAs were only distracting customers. To test this, they created a simpler variation with only one bold CTA that asked customers to continue to checkout. The variation performed better by 11.40% with a 99% statistical…

    The Daily Egg- 16 readers -
  • Part 9: SEM Ad Copy Testing Insights for Your CMO

    … have been numerous independent studies showing that DKI lifts performance. Though many of these studies have methodology flaws (lack of statistical significance, comparisons over different date ranges, etc.), there are enough studies showing lift from DKI. Case closed, right? Not so fast. If we may make such a stuffy and high brow Aristotle…

    Karen Amundson/ BoostBlogin Paid Search SEO- 9 readers -
  • 6 Email A/B Tests You Can Run Today (And Get Results)

    … to start thinking of email split testing as a silver bullet to all your email marketing problems. Well, it’s not a silver bullet. But it’s the next best thing. There’s one problem regarding email marketing that I want to draw your attention to: statistical significance. The problem isn’t with testing itself, but with the way that some email…

    Neil Patel/ The Daily Eggin EMail- 18 readers -
  • Tips For Testing New Things In Marketing

    … The Holiday Shopping season is upon us! In my opinion, it’s one of the best times ever to run new tests in Marketing. Running and measuring tests requires a massive amount of data to arrive at statistical significance. There will never be more data available than during your company’s busy season (which happens to be Q4 for many businesses…

    Ian Lopuch/ PPC Ianin Affiliate- 6 readers -
  • Why You Can’t Just Trust Your Split Test Stats

    … have mathematically concluded to the standards set by the programmer. They do not tell you what your stats mean, or even if you ran a valid split test. This can lead your stats to “trick” you into thinking you have valid and completed split tests when the reality is anything but. If you plan on having a successful split testing program, you need…

    Adam Lundquist/ PPC Hero- 5 readers -
  • Heatmaps Role in Conversion Optimization Q&A

    … Chris Goward presented a webinar on October 30th 2014 titled The 2 Ways to Use Heatmaps to Light the Fire Under your Website Tests (recorded). The webinar, co-hosted by WiderFunnel and CrazyEgg, sparked some great questions during the Q&A period. We are happy to share them with you. Q&A Recap Q: How do heatmaps compare to qualitative…

    Jacqueline Mcdonald/ WiderFunnel- 4 readers -
  • Mobile Marketing Optimization Q&A

    … changes. So going back to test is worth doing. But give yourself some time and run through a bunch of tests, and then go back and validate. And if nothing else, this can be used as a tech check to make sure your statistical significance is working out. Q: Do you have any kind of tips for dealing with HIPPO’s (Highest Paid Person’s Opinion) who…

    Jacqueline Mcdonald/ WiderFunnelin Mobile- 12 readers -
  • How to Write the Perfect Email That Gets Opened and Clicked

    … test we conducted, there would be an average of 3,300 customers in each group. To ensure our results had statistical significance, we used this A/B Calculator. 4. The Email Platform Before you can start testing, you need a solid email marketing platform that lets you perform A/B split test campaigns. We decided to use MailChimp as it has detailed…

    The Daily Eggin EMail How To's- 11 readers -
  • Supercharge Your PPC Workflow

    … for optimization in the upcoming months. Ad test analysis. Review ad copy tests, pause losers and start new tests. Take note of tests that don’t have enough data for statistical significance, so you can look at them next month. Remarketing audience performance review. Are your remarketing audiences performing the way you expected? Do you need to create new…

    Melissa Mackey/ Search Engine Watchin Paid Search- 10 readers -
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