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Z-Test: Overview and Requirements Requirements for Z-Test: Steps for Conducting a Z-Test Example Calculation: One-Sample Z-Test Scenario: A teacher believes the average score on a history exam is 75 points. We randomly select a sample of 30 students and find their scores. We want to test if the average score from this sample is significantly … Read more
Before we dig into understanding normal distribution, we should first take a look at what distribution is? What is distribution? Distribution is a function that describes how the values of a variable are spread throughout the dataset. It reveals the possibility or frequency of each possible value occurring. For example, Imagine measuring the heights of … Read more