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Quiz: Statistics

5 questionsNo time limitPass: 60%+10 XP on first pass

The statistics you actually use at work: mean vs median, standard deviation and percentiles, the normal distribution, sampling, correlation vs causation, and A/B testing with a simple significance check — explained with tested Python code.

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  1. Question 1

    Packages are 3, 3, 4, 4, 5 and one 50 LPA. Which summary best describes a typical student?

  2. Question 2

    Two batches have the same mean but very different standard deviations. What does that mean?

  3. Question 3

    In a normal distribution, about what percentage of values lie within 2 standard deviations of the mean?

  4. Question 4

    Ice-cream sales and drowning cases rise together. What is the most likely explanation?

  5. Question 5

    What does a p-value of 0.01 in an A/B test mean?