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Probability Calculator
Calculate probabilities for independent events, event series, and normal distributions with Z-score lookup.
Probability Calculator
Calculate probabilities for events, series, and normal distributions
Value between 0 and 1
Value between 0 and 1
What is Probability?
Probability is the measure of the likelihood of an event occurring. It is quantified as a number between 0 and 1, where 0 means the event cannot occur and 1 means it will certainly occur.
Applications
- • Risk assessment in business and finance
- • Quality control in manufacturing
- • Medical diagnosis and treatment outcomes
- • Weather forecasting and predictions
Key Points
- • Probability ranges from 0 (impossible) to 1 (certain)
- • P(A') = 1 - P(A) gives the complement probability
- • Independent events multiply: P(A and B) = P(A) × P(B)
- • Union includes overlap: P(A or B) = P(A) + P(B) - P(A and B)
History
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