David Chen is a Certified Financial Analyst with expertise in statistical analysis and financial modeling.
Standard Deviation Calculator
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Standard Deviation Formula
Formula: SD = sqrt((Σ(x – μ)²) / N)
Formula Source: Investopedia
- x: Each individual data point.
- μ: Mean of all data points.
- N: Total number of data points.
Related Calculators
What is Standard Deviation?
Standard deviation is a measure of the amount of variation or dispersion in a set of values. A low standard deviation indicates that the values tend to be close to the mean, while a high standard deviation indicates that the values are spread out over a wider range.
How to Calculate Standard Deviation (Example)
- Step 1: Enter the values for the dataset.
- Step 2: Click “Calculate” to compute the standard deviation.
- Step 3: Review the result in the output box.
Frequently Asked Questions (FAQ)
What is standard deviation used for? Standard deviation is used to measure the volatility or risk in a dataset, such as in financial investments.
What does a high standard deviation mean? A high standard deviation means the data points are spread out over a wider range, indicating more variability.
What is the difference between variance and standard deviation? Variance is the average of the squared differences from the mean, while standard deviation is the square root of the variance.