Standard Deviation
Calculate the mean, variance, and standard deviation of your dataset. Essential for statistical analysis and understanding data spread.
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Applications
Used in finance for risk assessment, quality control in manufacturing to measure consistency, and in weather forecasting to analyze temperature variations.
The Formula
Sample Standard Deviation: s = √[Σ(x - x̄)² / (n - 1)] . It measures the spread of data points from the mean.
Fun Fact: A standard deviation of zero means all data points in a set are exactly the same.
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