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Data Analyst · Junior · Theory

What is a confidence interval, and how do you interpret it correctly?

~4 min by voice

How to approach it

The interviewer wants to see whether you understand a confidence interval as an estimate of a population parameter from a sample, whether you can interpret it correctly (through repeated experiments, not as "a 95% probability the parameter is inside"), and whether you know what its width depends on.

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The interviewer will ask this question and listen. Think out loud and ask for a hint if you need one. When you're done, pause or tap “That's my answer”. In about a minute, your score and the points you covered show up here.

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Best with headphones · ~4 min