Statistics
Relative Standard Deviation Calculator
Compute the coefficient of variation (RSD). Calculate the Relative Standard Deviation (RSD) or Coefficient of Variation (CV) to compare data variability.
Dataset Input
Valid formats: 12, 15.5, 20 or newline separated lists. Non-numeric values are automatically excluded.
Summary Metrics
Sample Size (n)10
Min / Max Range[12, 30]
Summation (Σx)212
Arithmetic Mean
21.2
Median Value
21.5
Modal Value
22
Std. Deviation
5.2688
Population Variance
27.76
Total Range Spread
18
Frequency Distribution
Dataset visualization across unique values
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Solution Methodology
01
Enter Data
Input the dataset values.
02
Compute Mean & SD
Calculate the sample mean (x̄) and standard deviation (s).
03
Calculate RSD
Compute RSD = (s / |x̄|) × 100%.
Common Questions
What is Relative Standard Deviation (RSD)?
RSD is a standardised measure of dispersion of a probability distribution or frequency distribution. It is calculated by dividing the standard deviation by the mean and multiplying by 100 to get a percentage. It is also called the Coefficient of Variation.
Why use RSD instead of standard deviation?
Standard deviation is an absolute measure of spread in the units of the data. RSD is a relative percentage, allowing you to compare the variability of datasets with different units or vastly different mean values.