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The actual conversion numbers are higher because, as I noted in the article, I'm only reporting number for web forms in order to keep things simple. There's al
by darrennix 13y ago
The actual conversion numbers are higher because, as I noted in the article, I'm only reporting number for web forms in order to keep things simple. There's also email and phone inquiries to count so you can basically multiply by 3x.
As for sample size, we're vigilant to make sure that we reach statistical significance. Typically our tests will encompass about 2,000 data points per group.
Our job is made easier by the fact that we're looking for huge wins so when we see a 10% gain with a 99% confidence, that's still a "fail" scenario for us.