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- 16 readers -
  • Seven Conversion Rate Tactics That Increased Sales by $21 Million

    … visitors and initiated hundreds of new orders at a value of more than $300,000. 1. Key Functionality In 2008, Forrester Research released a report titled Small Website Investments That Pay Off. It focused on low-cost Web activities that can have a strong impact on your bottom line. Through two years of hard work, prioritization, and site usability…

    MarketingProfs- 13 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- 6 readers -
  • How to Stop Wasting AdWords Spend In Just 3 Clicks

    …, or your company simply has loads of ads and you’re using scripts to address this problem you’re likely missing a ton of broken URL’s because of one or more of the following script limitations. Scripts break for unknown reasons – AdWords provides error messages when a script fails, but more often than not your left clueless as to why a script fails…

    Jeremy Page/ PPC Heroin Paid Search How To's- 8 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- 14 readers -
  • Part 9: SEM Ad Copy Testing Insights for Your CMO

    … “It is the mark of an educated mind to be able to entertain a thought without accepting it.” ― Aristotle Does DKI improve performance? Google is rolling out the ad customizer tool, which Search Engine Land calls “Dynamic Keyword Insertion On Steroids.” So it seems appropriate to reevaluate the merits of Dynamic Keyword Insertion (DKI). There…

    Karen Amundson/ BoostBlogin Paid Search SEO- 6 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- 11 readers -
  • Tips For Testing New Things In Marketing

    … pages, build the banners, get legal approval all well ahead of time. When things get busy, I like to focus on execution, and it’s always so great to have all the background work done well ahead of time. Image of beta test © iStockPhoto – Aquir …

    Ian Lopuch/ PPC Ianin Affiliate- 5 readers -
  • Why You Can’t Just Trust Your Split Test Stats

    … The split test experiment you ran on your ads is complete. You ran two different ads on AdWords, and made sure to test an important variable like the value proposition. You then marked the experiment as complete when whichever program you used told you it was. You took the program at its word - because computers are good at math and began…

    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

    … 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

    … extensions, callout extensions? Geo-targeting review. Are all your geographic bid modifiers and settings correct? Are there geographies you should bid up or exclude based on performance? Dayparting review. If you’re using dayparting, review the settings to ensure you’re meeting goals. If you’re not using dayparting, review performance by day of week…

    Melissa Mackey/ Search Engine Watchin Paid Search- 9 readers -
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