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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- What is hypothesis testing, and what does a p-value actually mean?
Hypothesis testing checks whether data is surprising under a default assumption called the null hypothesis. The p-value is the probability of seeing results at least as extreme as yours if the null hypothesis were true. A small p-value is evidence against the null. It is not the probability that the null is true.
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