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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
In this article we will understand everything about what is Standard Error, we will be starting with understanding the basics needed for Standard Error and then move on to what is Standard Error, how and why is it used and how to calculate Standard Error. What is Population? Population: Population represents complete set of individual … Read more
What is a Hypothesis? A hypothesis is an educated guess or a tentative statement about a phenomenon that can be tested through research. It serves as a foundation for an investigation, guiding researchers in collecting and analyzing data. A good hypothesis is testable, falsifiable and specific. An example of a good hypothesis may be, imagine … Read more
What is Poisson distribution? The Poisson Distribution is a type of probability distribution that is used to model the number of events occurring in a fixed interval of time or space. What describes a Poisson distribution? Discrete events: Poisson distribution applies to situations where evets are countable and they occur independently of each other, meaning … Read more
What is Binomial Distribution? The binomial distribution is a probability distribution that is used in situations where there are two possible outcomes in a series of events or in a series of independent trials, it describes the likelihood of getting a certain result in those trials. to understand better, imagine flipping a coin 100 times, … Read more