What is One-sample T-test? Easy Explanation for Data Science Interviews

The t-test is one of the most basic, and commonly used hypothesis tests. There are many data science interview questions on t-tests, so in this video, we’ll dive into when to use it, and how to conduct one-sample t-tests.
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Contents of this video:
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0:00 Intro
0:58 Comparison between t-test and z-test
2:22 Assumptions of the t-test
3:20 The test statistic of the t-test
2:24 Difference between the t-distribution and the normal distribution
6:14 Application of the t-test for one-sample mean
9:40 Confidence intervals for the population mean using the t-test

[@emma_ding]

Many of you have asked me to share my presentation notes, and now… I have them for you! Download all the PDFs of my Notion pages at www.emmading.com/get-all-my-free-resources. Enjoy!

[@user-lj2mc1me1s]

Hello Emma! Thank you for this video! What formal test can we use to understand that variance is chi-distributed and independent from the mean?

[@raminamin3194]

You do not explain it properly unfortunately. When you create these videos, you need to make the language simple for your audience to understand rather than just reading the points and moving to the next point.