Blog Posts

How long a test has to run before you can believe it

How long a test has to run before you can believe it

Most tests are stopped for one of two reasons: someone got impatient, or someone got excited. Neither is a statistical event. This piece is about the third reason — the one that holds up when the resu

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Reading attribution without fooling yourself

Reading attribution without fooling yourself

Some text introducing the table.Factor What to look for ExampleHeadline Is the value clear? "Increase your conversions"CTA Is the n

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