Calculators

Calculates the degrees of freedom (df) for various statistical tests, representing the number of independent pieces of information available to estimate a parameter.

Calculates probabilities related to the time until an event occurs in a Poisson process. The exponential distribution models the time until an event happens, given an average rate of occurrence.

Calculates the average of the absolute differences between each data point and the mean.

Calculates the accuracy of a classification model, representing the proportion of correct predictions.

Calculates a single value used to estimate a population parameter, such as the sample mean estimating the population mean.

Calculates the proportion of the variance in the dependent variable that is predictable from the independent variable(s) in a regression.

Calculates the engagement rate for social media posts. Engagement rate is a key metric for evaluating the effectiveness of content and the level of audience interaction.

Calculates the statistical significance and other key metrics for A/B test results.

Calculates Spearman's rank correlation coefficient, measuring the strength and direction of association between two ranked variables.

Calculates the Interquartile Range (IQR), which is the difference between the third quartile (Q3) and the first quartile (Q1). The IQR measures the spread of the middle 50% of a dataset.