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All Things Data-Driven Marketing

Product-Led Growth

John Wanamaker, considered a pioneer in marketing back in the 1800s, once said, “Half the money I spend on advertising is wasted; the trouble is I don’t know which half.”

A lot has changed since then, and data modeling and digital channels make attribution much easier. But marketing is still a cost to every business, and it doesn’t always deliver the results you hoped for. 

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Statistical power

Years ago, when I first started split-testing, I thought every test was worth running. It didn’t matter if it was changing a button color or a headline—I wanted to run that test.

My enthusiastic, yet misguided, belief was that I simply needed to find aspects to optimize, set up the tool, and start the test. After that, I thought, it was just a matter of awaiting the infamous 95% statistical significance.

I was wrong.

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Should how fallacy

Get a chicken. Cook it until it’s perfectly done. Reduce the jus to a nice pan sauce. Then finish it with some butter until it has the right balance of flavors. Enjoy.

This is a useless recipe, but it’s not wrong. It assumes, however, that accurate advice on what you should do is as valuable as advice on how to do it—the “Should-How Fallacy.”

But being right doesn’t create value; empowering others to succeed does.

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