LabCalc

Replicate Statistics Calculator

RSD % = s / |x̄| × 100

Mean, standard deviation, variance, range and RSD % for replicate measurements, with an explicit sample or population basis.

Measurements

Result

RSD = 0.6146 %

n = 5, mean = 10.122, s = 0.0622093

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Calculation

  1. Mean

    x̄ = Σxᵢ / n

    x̄ = 10.122

  2. Standard deviation

    s = √(Σ(xᵢ − x̄)² / (n − 1))

    0.0622093

  3. Variance

    0.00387

  4. Relative standard deviation

    RSD % = s / |x̄| × 100

    0.6146 %

  5. Spread

    min = 10.05, median = 10.12, max = 10.21, range = 0.16

Inputs

n
5
Values
10.12, 10.08, 10.21, 10.05, 10.15
Std dev basis
sample (n − 1)

Standard deviation basis: sample (n − 1). This is your explicit selection, not a default applied silently.

No outlier is removed or flagged. LabCalc performs no outlier rejection.

About this calculator

Paste or type your replicate measurements — separated by new lines, spaces, commas or semicolons — and the calculator reports the mean, median, range, variance, standard deviation and relative standard deviation.

The standard deviation basis is your explicit choice. Sample (n − 1) is the usual choice for a set of replicate measurements; population (n) applies only when your values are the entire population. No outlier is removed or flagged, and RSD is reported as undefined rather than infinite when the mean is zero.

LabCalc is provided as a calculation aid. Users remain responsible for verifying calculations, units, chemical compatibility, experimental procedures and applicable safety requirements before laboratory use.

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