Normal Distribution Calculator: Mean, Standard Deviation, Z-Score, and Empirical Rule Inputs
Prepare the mean and standard deviation inputs needed for normal distribution analysis from raw data. Built for QC engineers analyzing 20-100 batch SPC measurements, instructors grading bell-curve exams, and analysts moving into z-score, empirical rule, percentile, probability distribution, or confidence interval workflows.
12 values
Instant Math
Use when your data represents a subset of a larger population. Applies Bessel's correction.
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Enter your numbers above to see the mean, standard deviation, variance and other statistics.