Calculators
Poisson Confidence Interval Calculator
This calculator constructs a confidence interval for the mean of a Poisson distribution based on the number of observed events.
Simply fill in the values...
Calculators
Binomial Distribution Calculator
The Binomial distribution is one of the most commonly used distributions in statistics.
To find probabilities related to the Binomial distribution, simply fill in the...
Calculators
Outlier Boundary Calculator
The interquartile range, often abbreviated IQR, is the difference between the 25th percentile (Q1) and the 75th percentile (Q3) in a dataset.
We often declare...
Calculators
Pooled Variance Calculator
When performing a two sample t-test, we typically assume that the variances between the two samples are equal. Under this assumption, we can calculate...
Calculators
Area Between Two Z-Scores Calculator
This calculator finds the area under the normal distribution between two z-scores.
Simply enter the two z-scores below and then click the “Calculate” button.
Left Bound...
Calculators
Number Needed to Harm Calculator
Number needed to harm (NNH) refers to the average number of patients who need to be exposed to some risk factor to cause harm...
Calculators
Bonferroni Correction Calculator
When you conduct a single statistical test to determine if two group means are equal, you typically compare the p-value of the test to...
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