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

    … that information to smarter A/B tests that truly impact your conversion rate. 3. Make sure you reach statistical significance Statistical significance refers to “the low probability of obtaining at least as extreme results given that the null hypothesis is true.” In ordinary language, it means you’re sure the results of your test were reliable. Statistical…

    George Mathew/ The Daily Egg- 25 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- 16 readers -
  • The Great Disavow Debate

    … A decrease in referring domains An increase in referring domains after the decrease Of course a few sites do not provide statistical significance, but when you look at the commonalities you can start seeing trends emerge. The trend and commonality that we’ve seen in all of our Penguin recoveries is that they all lose a significant amount of backlinks…

    Marcela De Vivo/ Search Engine Watchin SEO Google- 10 readers -
  • How to Stop Wasting AdWords Spend In Just 3 Clicks

    … and track a 26-round multivariate ad test down to the ad group level in only a few minutes. It then records, tracks and reports each round of ad tests each time one reaches statistical significance. Ready to take Hero Pro for a test drive? (Free for 10 days – No Credit Card Required, No Strings Attached)…

    Jeremy Page/ PPC Heroin Paid Search How To's- 12 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- 22 readers -
  • Part 9: SEM Ad Copy Testing Insights for Your CMO

    … want. There may be a correlation between accents and high date ask-to-accept conversion rates (should we coin that the DCVR?). But it is not necessarily true that each individual woman will trip and fall head-over-heals for a guy just because he puts her bag in the “boot” instead of the “trunk.” This a logical fallacy of composition originally…

    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- 24 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- 8 readers -
  • Why You Can’t Just Trust Your Split Test Stats

    … those stats! A true split test means that the variables run at the same time and under the same circumstances. If you have an ad “a” running for one week, followed by ad “b” running the week after – then your split test has been compromised. The world changes quickly and the events, situations, and competitor ads that influence your experiment…

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

    … an exploratory method. Only in the reductive-conclusive side, when you are talking about A/B tests or multivariate tests, that’s where statistical significance matters. For click heatmaps it actually doesn’t, but the more clicks you get the more of an aggregate view you will get, and potentially, the more important hypotheses you’ll get. As a general rule…

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

    … Chris Goward was the keynote speaker at the Conversions@Google Summit on October 20th 2014. His presentation on Mobile Marketing Optimization spurred a great Question and Answer period. Here is how Chris defined mobile optimization during his presentation: A lot of people think mobile is the difference between a desktop and a phone. Some people…

    Jacqueline Mcdonald/ WiderFunnelin Mobile- 13 readers -
  • How to Write the Perfect Email That Gets Opened and Clicked

    … to figure out what you’d like to test. This might seem straightforward but with over 25 distinct elements in an email, it’s important to have a clear goal in mind before starting out. Since we had never tested email marketing campaigns with our customers, we wanted to look at the following parameters: The email subject line (“SL”), The email content…

    The Daily Eggin EMail How To's- 15 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- 13 readers -
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