FAQ: Analyze FarmBurg's A/B Test - Performing a Significance Test

This community-built FAQ covers the “Performing a Significance Test” exercise from the lesson “Analyze FarmBurg’s A/B Test”.

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This exercise can be found in the following Codecademy content:

Data Science
Analyze Data with Python

FAQs on the exercise Performing a Significance Test

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This module tells you to fill in all the values on the contingency table but all of your code from the previous module is gone. Thus you need to back space to find the numbers that you need to enter.

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They have given you the data from your previous exercise in the table in the ‘Learn’ section. Just look up that table and fill in the contingency table :))

I don’t understand why they tell us to do chi-test.
And I don’t think this test was explained earlier.

I read a bit about it and it seems that in A/B testing most people uses ether straightforward binomial test or t-test if values are not binomial.
It’s all rather confusing, which test and why should be used.

I also had to backtrack to copy my code from the previous module step. I think this particular section needs to be revised by the curriculum editors.

In a contingency table, how does it affect the test results if rows are test groups and columns are outcomes vs. if rows are outcomes and columns are test groups (if at all)? Thanks