Normal Distribution Calculator
Estimate the probability of a value at or below x under a specified normal model.
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Estimate the probability of a value at or below x under a specified normal model.
Worked example
Inputs
- Observed value x: 0
- Mean: 0
- Population standard deviation: 1
Results
- Probability at or below x: 50 %
Estimate the probability of a value at or below x under a specified normal model.
Reviewed:Common uses
Estimate the probability of a value at or below x under a specified normal model.
BEHIND THE NUMBERSFormula & assumptions
P(X≤x)=Φ((x−μ)/σ)
Estimate the probability of a value at or below x under a specified normal model.