RSD Calculator (Relative Standard Deviation)
Calculate Relative Standard Deviation (RSD) and Coefficient of Variation (CV) from a data set.
The Relative Standard Deviation (RSD), also known as the Coefficient of Variation (CV), measures the dispersion of a frequency distribution. It is often expressed as a percentage.
Calculator Inputs
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Results
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How It Works
Enter your dataset. We calculate the Standard Deviation (SD) and Mean (Average). The RSD is then calculated as (SD / Mean) * 100.
Worked Examples
Dataset: 10, 12, 11
(10+12+11)/3= 11Calculated= 1.0(1.0 / 11) * 100= 9.09%Tips & Best Practices
- •A lower RSD indicates better precision (data points are closer to the mean).
- •RSD is useful for comparing the spread of two different datasets with different means.
Frequently Asked Questions
What is the RSD formula?
RSD = (Standard Deviation / Mean) × 100%.
Why use RSD instead of Standard Deviation?
Standard Deviation is absolute. RSD is relative, allowing you to compare precision across different magnitudes of data.
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