What is the Z-test for Means in Statistics? Easy Explanation for Data Science Interviews
The z-test is one of the most basic, and commonly used hypothesis tests. There are many data science interview questions on z-tests, so in this video we’ll dive into when to use it, and how to conduct both one-sample and two-sample z-tests for means. 🟢Get all my free data science interview resources https://www.emmading.com/resources 🟡 Product Case Interview Cheatsheet https://www.emmading.com/product-case... 🟠 Statistics Interview Cheatsheet https://www.emmading.com/statistics-i... 🟣 Behavioral Interview Cheatsheet https://www.emmading.com/behavioral-i... 🔵 Data Science Resume Checklist https://www.emmading.com/data-science... ✅ We work with Experienced Data Scientists to help them land their next dream jobs. Apply now: https://www.emmading.com/coaching // Comment Got any questions? Something to add? Write a comment below to chat. // Let's connect on LinkedIn: / emmading001 ==================== Contents of this video: ==================== 00:00 Introduction 01:06 When to use the z-test? 01:27 Assumptions of z-tests 02:58 Z-test for One Sample Mean 06:35 Obtain the confidence interval for population mean 08:11 Comparing the means of two populations
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