StrikingViper69
Shredding scales and making sales
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I've been doing split testing for a year or so with my sales pages. It's been a fun way to see what works and what doesn't, and is a simple way to make a sales page (or a checkout, offer, anything) more effective.
I recently decided to try a more complex test that what I've done in the past: 27 variations, with upsells. I was talking to a mathematician yesterday about statistical analysis, and he brought up some ideas I hadn't considered before, and some statistical analysis tools that I've never considered using before; which completely changes how I was looking at the tests and measuring the actual result.
A quick example: I have a sales page (and variations of it), and after completing the checkout the customer is shown two offers, offer 1 then offer 2. From using a chi-squared test, it looks like the probability of a customer choosing a post-purchase offer is independent of the sales page they use. Therefore, when looking at which sales page is "best", I should not include the $$$ from a post-purchase upsell.
Does anyone with experience split testing use statistical analysis? Are you looking at confidence limits, standard deviations and chi-squared tests? How do you use them to make sure what you are measuring is real? What mistakes have you made with your analysis?
I recently decided to try a more complex test that what I've done in the past: 27 variations, with upsells. I was talking to a mathematician yesterday about statistical analysis, and he brought up some ideas I hadn't considered before, and some statistical analysis tools that I've never considered using before; which completely changes how I was looking at the tests and measuring the actual result.
A quick example: I have a sales page (and variations of it), and after completing the checkout the customer is shown two offers, offer 1 then offer 2. From using a chi-squared test, it looks like the probability of a customer choosing a post-purchase offer is independent of the sales page they use. Therefore, when looking at which sales page is "best", I should not include the $$$ from a post-purchase upsell.
Does anyone with experience split testing use statistical analysis? Are you looking at confidence limits, standard deviations and chi-squared tests? How do you use them to make sure what you are measuring is real? What mistakes have you made with your analysis?
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