Seth Stephens-Davidowitz is a former Google data scientist and self-confessed data nerd. His research ...

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Over the past eleven days we’ve looked at – and challenged you to calculate ...

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For the penultimate 12 days of Christmas challenge we’re returning to the profit and ...

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In yesterday’s challenge you calculated: How much it costs you to acquire a customer ...

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Today’s challenge is to answer two questions every business owner asks themselves which are: ...

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Today I’ve another gift for you that will round off our series of challenges ...

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