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These articles invite you to explore statistical ideas in more depth.

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What is a random variable, really?
This article offers an advanced perspective on random variables for the interested reader.

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What is a hypothesis test?
This article explores the meaning of hypothesis tests, and also some of the major difficulties in interpreting them

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Challenging data tasks: the making of 'Where are you flying?'
How was the data for this problem compiled? A guided tour through the process.