Normal Distribution Calculator
Calculate probabilities from a normal distribution. Enter mean, standard deviation, and x-value to get z-score, cumulative probability, and PDF value.
How to Use Normal Distribution Calculator
Enter the mean (μ), standard deviation (σ), and an x-value. The calculator computes the z-score, cumulative probability P(X ≤ x), upper tail probability P(X > x), and the probability density function value at x.
Step-by-Step Instructions
- Enter the mean (μ) of the distribution
- Enter the standard deviation (σ) — must be positive
- Enter the x-value to evaluate
- Click Calculate to see z-score and probabilities
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