To ZTEST, we need to have two independent data points that are not related to each other or don’t affect each other data points, and data should be normally distributed Normally Distributed Normal Distribution is a bell-shaped frequency distribution curve which helps describe all the possible values a random variable can take within a given range with most of the distribution area is in the middle and few are in the tails, at the extremes. The sample size should be >= 30 otherwise, we need to use T-TEST. This tests the mean of the two sample data sets when the variance is known, and the sample size is large.
Z-TEST is one such hypothesis test function. By conducting a hypothesis test we try to prove that the null hypothesis is false against the alternative hypothesis. The null hypothesis is a hypothesis that refers to a common statement in general.
read more that is used to test the alternative hypothesis against the null hypothesis. It confirms whether the primary hypothesis results derived were correct. Excel Z TEST is a kind of hypothesis test Hypothesis Test Hypothesis Testing is the statistical tool that helps measure the probability of the correctness of the hypothesis result derived after performing the hypothesis on the sample data.
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