Skip to contentSkip to footer
      employer cover photo
      employer logo
      employer logo

      Meta

      Engaged Employer

      Meta Data Scientist interview

      Meta Interview Question

      Data Scientist Interview

      What is the difference between Z test and T test?

      Interview Answers

      Anonymous

      Jul 24, 2018

      True variance is known versus variance is unknown.

      Anonymous

      May 23, 2019

      the main difference: population variance z-test you know the variance and mean of the population and can calculate SE based on that. t-test is that you don't know the population parameters and your SE is calculated by samples' SD

      1
      Related searches: Meta reviews | Meta jobs | Meta salaries | Meta benefits | Meta conversations
      Meta interviews