Connected statistics workflow

v10.85 connects descriptive statistics, probability models, distributions, confidence intervals, sample-size planning, hypothesis tests, correlation/regression, rank-based methods, and counting tools without replacing the established historical engines.

Interpret statistical results in context

Use plots and descriptive summaries before formal tests. Check the sampling/design assumptions that matter for the chosen method, report effect size and uncertainty where available, and avoid treating a threshold such as p < .05 as proof of importance, causation, or truth. Browser calculations are educational/planning utilities, not domain-specific professional advice.

How to use this Independent Events Probability Calculator

Enter probabilities for events A and B to calculate common independent-event combinations.

What this tool calculates

Calculate joint, union, exactly-one, and neither probabilities for two independent events.

Practical limits

The calculator uses textbook probability models. Independence is assumed only on pages that explicitly state it; real-world dependence or biased outcome mechanisms require a different model.