Interview Q&A / Data Science
Data Science interview questions
Statistics, pandas, cleaning data and exploratory analysis for analyst and data science roles.
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- When do you use a paired t-test instead of an independent t-test?
Use a paired t-test when the two measurements come from the same subjects or matched pairs, such as before and after. It tests whether the mean of the differences is zero, which removes person-to-person variation.
IntermediateQuick answer1 min read