Hypothesis testing

Practicing Statistics Interview Questions in Python

Conor Dewey

Data Scientist, Squarespace

Quick review

Null hypothesis examples

1 xkcd
Practicing Statistics Interview Questions in Python

Assumptions

  • Random sampling
  • Independent observations
  • Normally distributed
  • Constant variance
Practicing Statistics Interview Questions in Python

Generating hypotheses

  Types of tests

Practicing Statistics Interview Questions in Python

Which test to use

Z tests vs. t tests

Practicing Statistics Interview Questions in Python

Evaluating results

 

Rejecting the null hypothesis

1 Wikimedia
Practicing Statistics Interview Questions in Python

Types of errors

  Confusion matrix example

1 AB Tasty
Practicing Statistics Interview Questions in Python

Summary

  • Quick review
  • Assumptions
  • Testing process
  • Types of errors
Practicing Statistics Interview Questions in Python

Let's prepare for the interview!

Practicing Statistics Interview Questions in Python

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