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Exercise

Hypothesis testing - Non-standard statistics

In the previous two exercises, we ran a permutation test for the difference in mean values. Now let's look at non-standard statistics.

Suppose that you're interested in understanding the distribution of the donations received from websites A and B. For this, you want to see if there's a statistically significant difference in the median and the 80th percentile of the donations. Permutation testing gives you a wonderfully flexible framework for attacking such problems.

Let's go through running a test to see if there's a difference in the median and the 80th percentile of the distribution of donations. As before, you're given the donations from the websites A and B in the variables donations_A and donations_B respectively.

Instructions 1/3
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  • Set samples_percentile and samples_median equal to the difference in the 80th percentile and medians of permuted_A_datasets and permuted_B_datasets, respectively.
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