Standard Deviation (SD) Calculator using Data Points

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Determine the Standard Deviation, Coefficient of Variation, and Mean using A Given Set of Data Points.

Data Points (Please separate with a comma. e.g. 12,15,14,14):


Calculate Reset Print

N =
Mean =

SD =
CV(%) =

1SD Range =
2SD Range =
3SD Range =

Please click here if you would like to determine the standard deviation from a reference range.

Definition of Terms:

Mean: Average of a given set of values
Standard Deviation: Amount of variation or dispersion of a set of data values
Coefficient of Variation: Size of a standard deviation in relation to its mean

Formula:

Mean: Sum of all data points divided by the number of data points
Standard Deviation (SD):

Formula	Explanation
	= sample standard deviation = sum of… = each value  = sample mean  = number of values in the sample

Coefficient of Variation (CV): SD/Mean x 100

Please check out our list of calculators for Laboratory Statistics:

• Standard Deviation Calculator from Reference Range
• Standard Deviation Calculator using Data Points
• Calibration Verification and Linearity
• Method Validation and Correlation