The z-test is a great asset to use when exploring proportions. In this video, I go over conducting both one-proportion and two-proportion tests, using loads of step-by-step examples. I’ll also share some of my top tips on when to use “pooled” vs. “unpooled” variance.
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Contents of this video:
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00:00 Introduction
00:53 Why Use Z-Test for Proportions?
02:24 One-Proportion Z-Test
07:37 Two-Proportion Z-Test
13:00 Confidence interval example
13:35 Conclusion
3 авг 2024