Calculators

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 Defects Per Million Opportunities (DPMO), a quality metric representing the number of defects per million opportunities in a process.

Performs a non-parametric test to compare differences between two independent groups when the assumption of normality is violated. It calculates the U statistic and associated p-value.

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

Calculates the entropy (average level of information, surprise, or uncertainty) inherent in a variable's possible outcomes.

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

Calculates the original data point value given a Z-score, mean, and standard deviation.

Calculates the difference between the observed value and the predicted value from a regression model.

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

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