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Probability Distributions in Excel

How to Find the Z Critical Value in Excel

Whenever you conduct a hypothesis test, you will get a test statistic as a result. To determine if the results of the hypothesis test are...

How to Convert Between Z-Scores and Percentiles in Excel

A z-score tells us how many standard deviations away a certain value is from the mean of a dataset. A percentile tells us what percentage of observations fall below a...

How to Apply the Empirical Rule in Excel

The Empirical Rule, sometimes called the 68-95-99.7 rule, states that for a given dataset with a normal distribution: 68% of data values fall within one standard deviation...

How to Find a P-Value from a Z-Score in Excel

Many hypothesis tests in statistics result in a z-test statistic. Once we find this z-test statistic, we typically find the p-value associated with it....

How to Calculate Z-Scores in Excel

In statistics, a z-score tells us how many standard deviations away a value is from the mean. We use the following formula to calculate...

How to Find the T Critical Value in Excel

Whenever you conduct a t-test, you will get a test statistic as a result. To determine if the results of the t-test are statistically...

How to Use the Poisson Distribution in Excel

The Poisson distribution is one of the most commonly used distributions in statistics. In Excel, we can use the POISSON.DIST() function to find the probability that...

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